Write two numbers that multiply to the value on top and add to the value on bottom.
-18
7

Write Two Numbers That Multiply To The Value On Top And Add To The Value On Bottom.-187

Answers

Answer 1

Answer:

  9, -2

Step-by-step explanation:

You want two numbers with a product of -18 and a sum of 7.

Factors

These are easiest if you list the factor pairs of the product. You want to choose them so their sum has the sign of the required sum.

  -18 = (-1)(18) = (-2)(9) = (-3)(6)

Sums of these factor pairs are 17, 7, 3.

The pair of numbers you want is -2 and 9.

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Related Questions

..............................................

Answers

Answer:

A

Step-by-step explanation:

is making a large table in the shape of a​ trapezoid, as shown. She needs to calculate the area of the table. She is making the longest side of the table twice as long as the​ table's width. Complete parts a and b below.

Answers

Answer:

Step-by-step explanation:

Answer:

Chloe is making a large table in the shape of a trapezoid, as shown. She needs to calculate the area of the table. She is making the longest side of the table twice as long as the table's width. Complete parts a and b below.

a) Write an expression for the area of the table in terms of the width x.

One possible expression is:

A = (x + 2x) * h / 2

where A is the area of the table, x is the width of the table, and h is the height of the table.

To get this expression, we use the formula for the area of a trapezoid    :

A = (a + b) * h / 2

where a and b are the lengths of the parallel sides of the trapezoid. Since Chloe is making the longest side of the table twice as long as the width, we can write:

a = x

b = 2x

Substituting these values into the formula, we get:

A = (x + 2x) * h / 2

b) Simplify the expression and find the area of the table if x = 3 feet and h = 4 feet.

To simplify the expression, we can combine like terms and apply the order of operations:

A = (x + 2x) * h / 2

A = (3x) * h / 2

A = 3 * x * h / 2

To find the area of the table if x = 3 feet and h = 4 feet, we can plug in these values into the simplified expression:

A = 3 * x * h / 2

A = 3 * 3 * 4 / 2

A = 9 * 4 / 2

A = 36 / 2

A = 18

Therefore, the area of the table is 18 square feet.

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loan amount $17,000 simple interest 6.8% total interest $867 loan in months

Answers

The monthly payment on the loan would be approximately $2,023.52.

To calculate the loan in detail, we need to determine the time period and the monthly payment. Let's break down the given information:

Loan amount: $17,000

Simple interest rate: 6.8%

Total interest: $867

First, we can calculate the interest amount using the formula for simple interest:

Interest = Principal × Rate × Time

We know the interest amount is $867, and the principal (loan amount) is $17,000. Let's solve for time (in years):

867 = 17,000 × 0.068 × Time

Dividing both sides of the equation by (17,000 × 0.068), we get:

Time = 867 / (17,000 × 0.068)

Time ≈ 0.7596 years

Since the loan term is usually expressed in months, we multiply the above result by 12 to convert it to months:

Time in months = 0.7596 × 12

Time in months ≈ 9.1152 months

Now that we have the time period in months, we can calculate the monthly payment (P) using the formula:

P = (Principal + Total Interest) / Time in months

P = (17,000 + 867) / 9.1152

P ≈ 2,023.52

Therefore, the monthly payment on the loan would be approximately $2,023.52.

To summarize, for a loan amount of $17,000 with a simple interest rate of 6.8% and a total interest of $867, the loan term would be approximately 9.1152 months, and the monthly payment would be around $2,023.52.

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Your teacher will grade your response to this question to ensure you receive proper credit for your answer.
The equation (x + 6)2 + (y + 4)2 = 36 models the position and range of the source of a radio signal. Describe the position of the source and the range of the signals.

SOMEONE PLEAS HELP!

Answers

I guess that this is the equation of a circle, so the coordinates of the source of the radio signal are:

(-6,-4)

The signal has a range of 6, since the radius squared is 36

Before the search and collection of evidence, there must be _______.

A. Informed consent by the owner

B. A crime

C. A chain of custody

D. A search warrant

I’m stuck between D and B because law enforcement can conduct a search without a search warrant if there is consent by the owner. It is not C because that would be either during or after the collection of evidence.

Answers

Answer:

D) A search warrant

Step-by-step explanation:

A search warrant is required before the search and collection of evidence to ensure legal authorization and protection of individuals' rights against unreasonable searches and seizures.

Option B, "A crime", is incorrect because the presence of a crime is not a prerequisite for conducting a search and collection of evidence. There are various situations where searches and evidence collection may occur without a crime being involved, such as regulatory inspections, consented searches, or investigations into potential threats or risks.

By your logic when you say law enforcement can conduct a search without a search warrant if there is consent by the owner, that would mean option A would be right, but of course, it's not.

Complete the table and find the balance A if $3100 is invested at an annual percentage rate of 4% for 10 years and a compounded n times a year. Complete the table

Answers

The balance for each value of n is calculated by using the formula A = P(1 + r/n) ^nt. The rounded balance values are shown in the last column of the table above.

To complete the table and find the balance A if $3100 is invested at an annual percentage rate of 4% for 10 years and compounded n times a year.

The formula for calculating compound interest is as follows:

A = P(1 + r/n) ^nt,

where P represents the principal investment amount, r is the interest rate, n is the number of times the interest is compounded, t represents the time in years, and A represents the total amount, which includes the principal amount and the interest earned.

The table is given below:
[tex]\begin{array}{|c|c|c|} \hline \text{n} &

\text{A = P(1 + r/n) }^{nt} &

\text{Balance (rounded to nearest cent)} \\ \hline \text{1} &

\text{3100(1 + 0.04/1)}^{1*10} &

\text{\$4788.03} \\ \hline \text{2} &

\text{3100(1 + 0.04/2)}^{2*10} &

\text{\$4798.76} \\ \hline \text{4} &

\text{3100(1 + 0.04/4)}^{4*10} &

\text{\$4817.46} \\ \hline \text{12} &

\text{3100(1 + 0.04/12)}^{12*10} &

\text{\$4861.94} \\ \hline \end{array}[/tex]

The balance is obtained by substituting the values of P, r, n, and t into the compound interest formula.

In this case, the investment is $3100, the annual interest rate is 4%, the investment is for 10 years, and n is the number of times the interest is compounded.

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What is the volume of a cone where the radius is 6cm and the height 25cm

Answers

Answer:

Step-by-step explanation:

[tex]V=\frac{1}{3} \pi r^2h[/tex]

   [tex]=\frac{1}{3} \times\pi \times6^2\times25[/tex]

   [tex]=\frac{36\times25}{3\pi }[/tex]

   [tex]=\frac{300}{\pi }[/tex]

   [tex]=95.49\text{cm}^3[/tex]

Two investment portfolios are shown

Answers

In five years, Portfolio A is expected to be valued at around $7012. 75 while Portfolio B is anticipated to be worth roughly $7693. 10

How to solve

The formula to calculate the future value of an investment using simple annual interest is:

[tex]FV = PV * (1 + r)^n[/tex]

where:

FV = Future Value

PV = Present Value (the initial investment)

r = interest rate per period

n = number of periods

For Portfolio A (7%):

[tex]FV_A = $5000 * (1 + 0.07)^5[/tex]

= $5000 * 1.40255

= $7012.75

For Portfolio B (9%):

[tex]FV_B = $5000 * (1 + 0.09)^5[/tex]

= $5000 * 1.53862

= $7693.10

In five years, Portfolio A is expected to be valued at around $7012. 75 while Portfolio B is anticipated to be worth roughly $7693. 10

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The Complete Question

Two investment portfolios are shown, Portfolio A with a return of 7% annually and Portfolio B with a return of 9% annually. If you invest $5000 in each portfolio, what will be the total value of each portfolio after 5 years?

Norma owns and operates an accounting business as a sole proprietor. She purchased several computers at a cost of $9,000 for use in her business. Her business produced $120,000 of net income. Assume that she purchased the computers (5-year property) and placed them into service on January 11th of the current year. What is the amount of the cost recovery deductions for the first 3 years under MACRS? [The MACRS Table is shown under Course Supplement Materials.] (Be sure to show your work). Calculate the cost recovery deduction for the first 3 years if Norma elects straight-line depreciation. (Show your work). What is the cost recovery deduction she can use for each year under Section 179?

Answers

The cost recovery deductions for the first 3 years under MACRS are as follows:

Year 1: $1,800

Year 2: $2,304

Year 3: $941 (rounded)

Let's determine the cost recovery deductions under MACRS for the first 3 years:

Lets determine the property class for the computers.

Since the computers are 5-year property, they fall under the "5-Year Property" class.

Now determine the MACRS depreciation percentages for the property class.

Referring to the MACRS table, the depreciation percentages for 5-Year Property are as follows:

Year 1: 20.00%

Year 2: 32.00%

Year 3: 19.20%

Calculate the cost recovery deduction for each year.

Year 1:

Cost Recovery Deduction = Cost of Computers × Depreciation Percentage for Year 1

= $9,000 × 20.00%

= $1,800

Year 2:

Cost Recovery Deduction = (Cost of Computers - Accumulated Depreciation)×Depreciation Percentage for Year 2

= ($9,000 - $1,800) ×32.00%

= $7,200× 32.00%

= $2,304

Year 3:

Cost Recovery Deduction = (Cost of Computers - Accumulated Depreciation) × Depreciation Percentage for Year 3

= ($9,000 - $1,800 - $2,304) × 19.20%

= $4,896 × 19.20%

= $940.99 (rounded to nearest dollar)

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What decimal number is represented by the light bulbs shown in the figure?

Answers

The decimal number which is represented by the light bulbs shown in the figure is 39.0

We have to find the decimal number which is represented by the the light bulbs.

Let us take the light bulbs as 1 and not lighted are 0.

The binary numeral of the light bulbs shown in the figure is 00100111.

Now let us find the decimal number.

(0×2⁷)+(0×2⁶)+(1×2⁵)+(0×2⁴)+(0×2³)+(1×2²)+(1×2¹)+(1×2⁰)

=32+4+2+1

=39

Hence, 39.0 is the decimal number which is represented by the light bulbs shown in the figure.

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The drive from city A to city D is 320 miles. On this route you pass cities B and C before reaching city D. It is 82 miles less form City A to city B than it is from city C to City D and 40 miles farther from city B to city C than from city A to city B. How far is it from city B to city D?

Answers

The distance from City B to City D is 194 miles.

How to find the distance from city B to city D

Now, let's add up the distances to find the relationship between them:

Distance from City A to City D = Distance from City A to City B + Distance from City B to City C + Distance from City C to City D

320 miles = x miles + (x + 40) miles + (x + 82) miles

Now, let's solve this equation:

320 = 3x + 122

Subtracting 122 from both sides:

198 = 3x

Dividing both sides by 3:

x = 66

Therefore, the distance from City B to City D is:

Distance from City B to City D = Distance from City B to City C + Distance from City C to City D

Distance from City B to City D = (x + 40) + (x + 82)

Distance from City B to City D = 66 + 40 + 66 + 82

Distance from City B to City D = 194 miles

Hence, the distance from City B to City D is 194 miles.

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Using the standard normal table or a calculator, find the probability below assuming the distribution is a standard normal distribution. P(-0.6 < Z < 1.1)​

Answers

Using the standard normal table the probability P(-0.6 < Z < 1.1) assuming a standard normal distribution is approximately 0.5900 or 59%.

To locate the possibility P(-zero.6 < Z < 1.1) the usage of the usual ordinary distribution, we need to find the place beneath the usual ordinary curve between the z-ratings -0.6 and 1.1.

Using a well known normale table or a calculator, we are able to discover the corresponding cumulative chances for these z-scores.

For z = -0.6, the cumulative probability is 0.2743.

For z = 1.1, the cumulative probability is 0.8643.

To discover the probability between those  z-ratings, we subtract the cumulative probability of -0.6 from the cumulative chance of 1.1:

P(-0.6 < Z < 1.1) = 0.8643 - 0.2743 = 0.5900

Thus, the probability P(-0.6 < Z < 1.1) assuming a standard normal distribution is approximately 0.5900 or 59%.

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Determine the​ company's accounting​ equation, and label each element as a debit amount or a credit amount. If you use ​$ for the​ owner's equity, why is the accounting equation out of​ balance?
Complete the accounting equation​ below, and then below each​ element, select whether it is a debit or credit account.​ Finally, enter the amount for each element into the accounting​ equation, using ​$ for​ owner's equity. Note that the equation will not balance.

Winchester Cottage Management Services
Unadjusted Trial Balance
March 31, 2022

Balance
Account Title
Debit
Credit
Cash
$19,205

Accounts receivable
4,900

Supplies
280

Land
13,000

Building
38,000

Accounts payable

$1,000
Note payable

44,900
Noah Calef, capital

29,000
Noah Calef, withdrawals
1,550

Service revenue

7,900
Interest expense
360

Rent expense
1,700

Salaries expense
3,600

Utilities expense
205

Total
$82,800
$82,800

Answers

The adjusted accounting equation would be:Assets = Liabilities + Owner’s Equity Assets = $0 + $83,800 + $360Assets = $84,160

The accounting equation is an essential part of any business or organization as it represents the fundamental relationship between assets, liabilities, and owner’s equity.

It is expressed as Assets = Liabilities + Owner’s Equity. To determine the company's accounting equation and label each element as a debit amount or a credit amount,

we need to analyze the given information. Here's the solution:Given data:$1,000360 Utilities expense$82,800

We can conclude that the accounting equation is as follows:Assets = Liabilities + Owner's Equity Assets = $0 + $83,800 (since there is no given liability)Assets = $83,800

We can now calculate the debit and credit amounts of each element:Utilities expense: debit $1,000Owner’s Equity: credit $83,800

The accounting equation is out of balance because the $360 of utilities expenses were recorded as a debit, reducing the balance of assets to $83,440.

Therefore, to balance the equation, we must increase the owner’s equity by the same amount, i.e., $360. This balances the equation and ensures that all transactions are accurately recorded in the books of accounts.

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a is a geometric sequence where the 1st term of the sequence is -1/4 and the 8th term of the sequence is -1/512. Find the 6th partial sum of the sequence.

Answers

The 6th partial sum of the geometric sequence is 63/4.

What is 6th partial sum of the sequence?

To find the 6th partial sum of a geometric sequence, we first need to determine the common ratio (r) of the sequence.

Given that the 1st term (a₁) is -1/4 and the 8th term (a₈) is -1/512, we can use these values to find the common ratio.

We have the formula for the nth term of a geometric sequence:

aₙ = a₁ * r^(n-1)

Using this formula, we can write two equations based on the given information:

a₈ = a₁ * r⁸⁻¹

-1/512 = -1/4 * r⁷

Simplifying the equation:

r⁷ = (1/4) / (1/512)

r⁷ = (1/4) * (512/1)

r⁷ = 128

r = ∛(128)

r = 2

Now that we have the common ratio (r = 2), we can find the 6th partial sum (S₆) using the formula:

Sₙ = a₁ * (1 - rⁿ) / (1 - r)

Plugging in the values:

S₆ = (-1/4) * (1 - 2⁶) / (1 - 2)

S₆ = (-1/4) * (1 - 64) / (-1)

S₆ = (-1/4) * (-63) / (-1)

S₆ = 63/4

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If the gravitational force produced between two masses kept 2 m apart is 100 N, what will be its value when the masses are kept 4m apart? Show your calculation.) Ans: 25 N​

Answers

If the gravitational force produced between two masses kept 2 m apart is 100 N, the value when the masses are kept 4m apart is 25N

How can the gravitational force  be calculated?

The gravitational force, which is what pushes mass-containing objects toward one another. We frequently consider the pull of gravity from the Earth.

Since we were given the first force as 100 N and X represent he second force , then the distance between the mass at first was 2m , and the second is 4m, the we can calculate as

[tex]\frac{100}{x} =\frac{4^{2} }{2^{2} }[/tex]

[tex]\frac{100}{x} =\frac{16}{4}[/tex]

[tex]x=\frac{4*100}{16}[/tex]

[tex]X=25 N[/tex].

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QUESTION 6
Solve for a. (round to tenths)
8
a
14

Answers

Answer:

11.5

Step-by-step explanation:

Given:

Left side = 8

Bottom = a

Right side = 14

Using the Pythagorean theorem:

[tex]ax^{2}[/tex] + [tex]8x^{2}[/tex] = [tex]14x^{2}[/tex]

Simplifying the equation:

[tex]ax^{2}[/tex] + 64 = 196

Subtracting 64 from both sides:

[tex]ax^{2}[/tex]  = 132

Taking the square root of both sides:

a = [tex]\sqrt{132}[/tex]

Calculating the approximate value of "a":

a ≈ 11.5 (rounded to the nearest tenth)

Therefore, the value of "a" in the given right triangle is approximately 11.5.

To solve this, use the Pythagorean theorem (a^2+b^2=c^2) as it is a right triangle.

Seeing that c^2 is occupied with a value, we would want to subtract c^2 (14) by b^2 (8) to figure out a^2.

Thusly, we come up with c^2 (14)^2 - b^2 (8)^2 = a^2

Once simplified, we get 196-64 = a^2, which is 132 = a^2.

Now, simplify once again by square rooting both sides of the equation.
By doing so, we get:

A = 11.5 (rounded to tenths).

help last question and only 45 min left

Answers

It should be noted that since the total volume of concrete figures is 5 cubic feet, the library should order 6 cubic feet of concrete to minimize leftover concrete.

How to calculate the value

We can also solve this problem by using the following equation:

Total volume of concrete figures = Number of figures * Volume of each figure

Plugging in the known values, we get:

Total volume of concrete figures = 5 figures * 1 cubic foot/figure = 5 cubic feet

Since the total volume of concrete figures is 5 cubic feet, the library should order 6 cubic feet of concrete to minimize leftover concrete.

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find the approximate area of the shaded region, given that the area of the sector is approximately 13.08 square units.​

Answers

The area of the shaded region is 3915 units².

We have,

Area of the sector.

= 13.08 units²

Now,

To find the area of an isosceles triangle with side lengths 5, 5, and 4 units, we can use Heron's formula.

Area = √[s(s - a)(s - b)(s - c)]

where s is the semi-perimeter of the triangle, calculated as:

s = (a + b + c) / 2

In this case,

The side lengths are a = 5, b = 5, and c = 4. Let's calculate the area step by step:

Calculate the semi-perimeter:

s = (5 + 5 + 4) / 2 = 14 / 2 = 7 units

Use Heron's formula to find the area:

Area = √[7(7 - 5)(7 - 5)(7 - 4)]

= √[7(2)(2)(3)]

= √[84]

≈ 9.165 units (rounded to three decimal places)

Now,

Area of the shaded region.

= Area of the sector - Area of the isosceles triangle

= 13.08 - 9.165

= 3.915 units²

Thus,

The area of the shaded region is 3915 units².

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Find the sum and difference of the greatest and smallest dig- its formed by the given numbers. i. 5,6​

Answers

The sum of the greatest digit formed by the given numbers as required is; 11.

The difference of the greatest digit formed by the given numbers as required is; 1.

What is the sum and difference of the smallest and greatest number?

It follows from the task content that the given digits are ; 5 and 6.

Hence, the greatest digit is 6 while the smallest digit is 5.

Hence, the sum of both digits is; 6 + 5 = 11.

The difference of both digits is; 6 - 5 = 1.

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Help, please! Find the VOLUME of this complex shape.

Answers

Step-by-step explanation:

volume= length×breadth×height

8-3-3= 2 cm

2×2×4= 16 cm^2

4-2= 2 cm

3×2×4= 24 cm^2

3×4×4= 48 cm^2

total volume

= 16+24+48

= 88 cm^2

Every student of a school donated as much money as their number to make a fund for Corona- virus victims. If they collected Rs.13225 altogether, how many students donated money in the fund?​

Answers

Answer:

The problem statement suggests that the series of donations is arithmetic, as each student's donation increases by one as their number increases. Therefore, we can apply the formula for the sum of an arithmetic series to solve this problem.

In an arithmetic series, the sum S of n terms is given by:

S = n/2 * (a + l)

where:

- n is the number of terms (which represents the number of students in this case),

- a is the first term (in this case, the first student's number, which would be 1), and

- l is the last term (in this case, the last student's number, which we don't know yet).

Given that S = Rs. 13225, we have:

13225 = n/2 * (1 + l)

Since this is an arithmetic series starting from 1, the last term, l, is equal to n. Thus, we can substitute l with n:

13225 = n/2 * (1 + n)

Multiplying through by 2 to clear the fraction gives:

26450 = n * (1 + n)

Rearranging to a quadratic equation gives:

n^2 + n - 26450 = 0

This is a quadratic equation in the form of ax^2 + bx + c = 0. To solve for n, we can use the quadratic formula, n = [-b ± sqrt(b^2 - 4ac)] / (2a). But since n cannot be negative in this context (as it represents the number of students), we will only consider the positive root.

Applying the quadratic formula, we find that the positive root is approximately 162.5. However, the number of students must be a whole number. Therefore, the number of students is 163, because the 163rd student did not donate fully as per their number, and that's why the total amount doesn't reach the full sum for 163 students.

So, there were 163 students who donated money to the fund.

Angle a, b and c have a sum of 180 degrees. Prove that Sina +sinb - siny = y/2 * sinb/2 * cosc/2

Answers

4sin((a + b)/2)cos((a + b)/2)cos((a - b)/2) = 4sin(b/2)cos(c/2)

We can prove  that sin(a) + sin(b) - sin(c) = (y/2) * sin(b/2) * cos(c/2).

How do we know?

We apply the sum-to-product trigonometric identities.

We will express sin(c) as sin(180 - a - b):

sin(c) = sin(180 - a - b)

sin(180 - a - b) = sin(180)cos(a + b) + cos(180)sin(a + b)

= 0 * cos(a + b) + (-1) * sin(a + b)

= -sin(a + b)

substituting  the expression for sin(c), we have:

sin(a) + sin(b) - sin(c) = sin(a) + sin(b) - (-sin(a + b))

= sin(a) + sin(b) + sin(a + b)

We know also that sin(A) + sin(B) = 2sin((A + B)/2)cos((A - B)/2),

sin(a) + sin(b) + sin(a + b) = 2sin((a + b)/2)cos((a - b)/2) + 2sin(a/2)cos(a/2) + 2sin(b/2)cos(b/2)

= 2sin((a + b)/2)(cos((a - b)/2) + cos(a/2) + cos(b/2))

= 2sin((a + b)/2)(cos((a - b)/2) + cos((a + b)/2))

Using the identity of cos(A) + cos(B) = 2cos((A + B)/2)cos((A - B)/2):

2sin((a + b)/2)(cos((a - b)/2) + cos((a + b)/2)) = 2sin((a + b)/2)(2cos((a + b)/2)cos((a - b)/2))

= 4sin((a + b)/2)cos((a + b)/2)cos((a - b)/2)

4sin((a + b)/2)cos((a + b)/2)cos((a - b)/2) = 4sin(b/2)cos(c/2)

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Calculate the length of segment CD, given that AE is tangent to the circle, AE = 12, and EC = 8.​

Answers

The length of segment CD is approximately 28.84.

To calculate the length of segment CD, we need to use the properties of a tangent line and the given information.

In a circle, when a line is tangent to the circle, it forms a right angle with the radius drawn to the point of tangency. This means that triangle AEC is a right triangle.

Given that AE = 12 and EC = 8, we can use the Pythagorean theorem to find the length of AC, which is the hypotenuse of triangle AEC.

AC^2 = AE^2 + EC^2

AC^2 = 12^2 + 8^2

AC^2 = 144 + 64

AC^2 = 208

Taking the square root of both sides:

AC = √208

AC ≈ 14.42

Now, segment CD is a part of the diameter of the circle and passes through the center of the circle. Therefore, it is twice the length of the radius.

CD = 2 * AC

CD = 2 * 14.42

CD ≈ 28.84

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..................................................................

Answers

Answer:

[tex]\mathrm{y=\frac{2}{5}x+2}[/tex]

Step-by-step explanation:

[tex]\mathrm{Here,\ we\ see\ that\ the\ line\ passes\ through\ (-5,0)\ and\ (0,2).}\\\mathrm{So\ the\ equation\ of\ line\ is:}\\\\\mathrm{y-0=\frac{2-0}{0-(-5)}(x-(-5))}\\\mathrm{or,\ y=\frac{2}{5}(x+5)}\\\mathrm{or,\ 5y=2x+10}\\\mathrm{or,\ y=\frac{2}{5}x+2}[/tex]

Alternative method:

[tex]\mathrm{Here,}\\\mathrm{x-intercept(a)=-5}\\\mathrm{y-intercept(b)=2}\\\mathrm{Now,}\\\mathrm{Equation\ of\ the\ line\ is:}\\\mathrm{\frac{x}{a}+\frac{y}{b}=1}\\\\\mathrm{or,\ \frac{x}{-5}+\frac{y}{2}=1}\\\\\mathrm{or,\ \frac{2x-5y}{-10}=1}\\\\\mathrm{or,\ 2x-5y=-10}\\\mathrm{or,\ 5y=2x+10 }\\\\\mathrm{or,\ y=\frac{2}{5}x+2\ is\ the\ required\ equation.}[/tex]

Answer:

[tex]y=\dfrac{2}{5}x+2[/tex]

Step-by-step explanation:

To determine the equation of the graphed line, first identify two points on the line:

(-5, 0)(0, 2)

Substitute these points into the slope formula to find the slope (m) of the line:

[tex]\textsf{Slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{2-0}{0-(-5)}=\dfrac{2}{5}[/tex]

The slope-intercept form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept.

The line crosses the y-axis at y = 2. Therefore, the y-intercept is 2.

Substitute the found slope and the y-intercept into the slope-intercept formula to create an equation of the graphed line:

[tex]\boxed{y=\dfrac{2}{5}x+2}[/tex]

Question Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.4 feet and a standard deviation of 0.4 feet. A sample of 38 men's step lengths is taken. Step 1 of 2: Find the probability that an individual man's step length is less than 1.9 feet. Round your answer to 4 decimal places, if necessary.​

Answers

To find the probability that an individual man's step length is less than 1.9 feet, we can use the z-score formula and the standard normal distribution.

The z-score formula is given by:
z = (x - μ) / σ

Where:
x is the individual man's step length,
μ is the mean of the step lengths (2.4 feet), and
σ is the standard deviation of the step lengths (0.4 feet).

Substituting the given values:
z = (1.9 - 2.4) / 0.4
z = -0.5 / 0.4
z = -1.25

To find the probability associated with this z-score, we can use a standard normal distribution table or a calculator.

Using the standard normal distribution table, we find that the probability corresponding to a z-score of -1.25 is approximately 0.1056.

Therefore, the probability that an individual man's step length is less than 1.9 feet is approximately 0.1056 (rounded to 4 decimal places).

The probability that an individual man's step length is less than 1.9 feet is approximately 0.1056 or 10.56% (rounded to 4 decimal places).

Explain probability

Probability is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one. Probability has been introduced in Math to predict how likely events are to happen. The meaning of probability is basically the extent to which something is likely to happen. This is the basic probability theory, which is also used in the probability distribution,

According to the given information

The standardized value, also known as the z-score, is given by:

[tex]Z = \dfrac{(\text{x} - \mu)}{\sigma}[/tex]

Substituting the given values, we get:

[tex]Z = \dfrac{(1.9 - 2.4)}{0.4}[/tex]

[tex]Z = -1.25[/tex]

Now we need to find the probability that an individual man's step length is less than 1.9 feet, which is equivalent to finding the area under the standard normal distribution curve to the left of the z-score -1.25.

Using a standard normal distribution table or calculator, we can find that the area to the left of -1.25 is 0.1056.

Therefore, the probability that an individual man's step length is less than 1.9 feet is approximately 0.1056 or 10.56% (rounded to 4 decimal places).

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Desde que Renata se mudó a su casa en 2001 ha estado monitoreando la altura del árbol frente a su casa. Cuando llegó, el árbol medía 210 cm y ha estado creciendo 33 cm por año

a) ¿Cuál es la ecuación lineal que modela este suceso? b) ¿Cuánto medirá el árbol en 2067?
c) Área 3: Compruébalo como progresión aritmética.

Answers

Height = 210 + 33(t - 2001)

b) The tree will be 2388 cm tall in 2067

c) The heights form an arithmetic progression.

We have,

a)

To model the growth of the tree using a linear equation, we can express it as:

Height = Initial Height + Growth Rate x Number of Years

In this case:

Initial Height = 210 cm

Growth Rate = 33 cm/year

Number of Years = (Current Year) - (Year when Renata moved in)

Let's denote the Current Year as "t." Since Renata moved into her house in 2001, the number of years can be represented as (t - 2001).

Putting it all together, the linear equation that models the height of the tree is:

Height = 210 + 33(t - 2001)

b)

To find the height of the tree in 2067, we substitute t = 2067 into the equation:

Height = 210 + 33(2067 - 2001)

Height = 210 + 33(66)

Height = 210 + 2178

Height = 2388 cm

Therefore, the tree will be 2388 cm tall in 2067.

c)

To check if the heights form an arithmetic progression, we need to determine if the differences between consecutive terms are constant.

In this case, the growth rate of the tree is 33 cm per year, which means the height increases by 33 cm each year.

Since the growth rate is constant, the heights form an arithmetic progression.

Thus,

a)

Height = 210 + 33(t - 2001)

b) The tree will be 2388 cm tall in 2067

c) The heights form an arithmetic progression.

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The complete question:

Since Renata moved into her house in 2001, she has been monitoring the height of the tree in front of her house. When it arrived, the tree was 210 cm tall and has been growing 33 cm per yeara) What is the linear equation that models this event? b) How big will the tree be in 2067? c) Area 3: Check it as an arithmetic progression.

To calculate the variance for a population, SS is divided by N-1. True or False?

Answers

To calculate the variance for a population, the sum of squares (SS) is divided by the total number of observations in the population (N), not N-1. False.

The formula for population variance is:

Variance = SS/N

Where SS is the sum of squares, calculated by summing the squared differences between each observation and the population mean.

Dividing by N in the formula gives the population variance, which represents the average squared deviation from the population mean. This formula provides an unbiased estimate of the true variance of the entire population.

On the other hand, when calculating the variance for a sample (a subset of the population), we divide the sum of squares by N-1.

This correction factor of N-1 is used to account for the degrees of freedom lost when estimating the population variance from a sample.

By dividing by N-1, we obtain an unbiased estimate of the variance of the larger population from which the sample was drawn.

Therefore, for calculating the variance of a population, SS is divided by N, not N-1.

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81a^2+5b^2
factor, but this is algebra and intro to pre-calc

Answers

The expression 81a² + 5b² cannot be factored

How to factor the expression

from the question, we have the following parameters that can be used in our computation:

81a² + 5b²

using the above as a guide, we have the following:

The terms of the expression cannot be factored

This is so because they do not have any common factor

Hence, the expression 81a² + 5b² cannot be factored

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A cylindrical glass with a base radius of 1.4 inches and a height of 7.5 inches weighs 5.5 ounces when empty. The glass is filled with water 1.5 inches from the top. One cubic inch of water weighs 0.6 ounce. What statements about this situation are true? Select all that apply.

Answers

The weight of the empty glass is 5.5 ounces. [True]

The glass is filled with water 1.5 inches from the top. [True]

One cubic inch of water weighs 0.6 ounce. [True]

The weight of the water in the glass is approximately 11.88 ounces. [True]

Let's analyze the given information and determine which statements are true:

The weight of the empty glass is 5.5 ounces.

Water is poured into the glass until it is 1.5 inches from the top.

0.6 ounces equal one cubic inch of water in weight.

Now, let's consider some additional calculations to verify if other statements can be determined:

The glass is cylindrical, and we know its base radius is 1.4 inches and its height is 7.5 inches. To find the volume of the glass, we can use the formula for the volume of a cylinder:

Volume = π * radius^2 * height

Substituting the given values:

Volume = π * (1.4 inches)^2 * 7.5 inches

Volume ≈ 29.484 cubic inches

Since the glass is filled with water up to 1.5 inches from the top, we can calculate the volume of water in the glass:

Water volume = Total volume - Volume of empty space

Water volume = 29.484 cubic inches - (1.5 inches * π * (1.4 inches)^2)

Water volume ≈ 29.484 cubic inches - 9.678 cubic inches

Water volume ≈ 19.806 cubic inches

Now, we can find the weight of the water in the glass by multiplying the volume by the weight of one cubic inch of water:

Water weight = Water volume * Weight per cubic inch

Water weight ≈ 19.806 cubic inches * 0.6 ounces/cubic inch

Water weight ≈ 11.8836 ounces

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Enter the fraction 4/5 as a mixed number.
Enter the correct answer in the box.

Answers

Answer:

1 1/4

Step-by-step explanation:

5/4 can be decomposed as 4/4 + 1/4

so, 1 + 1/4

or in mixed number notation,

1 1/4

Answer:

1 1/4

Step-by-step explanation:

assuming that the real question, see the picture you put, asks for 5/4 and not 4/5, (4/5 is not a whole number). Let's solve 5/4, with 4/4 you have 1 and you are left with 1/4, so the answer is 1 1/4

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