(q8) Which of the following is the area of the surface obtained by rotating the curve
, about the y-axis?

The perimeter of the pentagon ABCDE is 12.8 units

To solve for the perimeter of the pentagon, we need to find the length of each side and add them up.

The length of a line segment in a coordinate plane can be found using the distance formula which is derived from the Pythagorean theorem:

D = √(x2-x1)² + (y2-y1)²

[tex]AB: \sqrt(-6-(-4))^2 + (-3-(-2))^2 = \sqrt5 = 2.236[/tex]

[tex]BC: \sqrt(-5-(-6))^2 + (-6-(-3))^2 = \sqrt10 = 3.162[/tex]

[tex]CD: \sqrt(-2-(-5))^2 + (-5-(-6))^2 = \sqrt10 = 3.162[/tex]

[tex]DE: \sqrt(-2-(-2))^2 + (-3-(-5))^2 = \sqrt4 = 2[/tex]

[tex]EA: \sqrt(-4-(-2))^2 + (-2-(-3))^2 = \sqrt5 = 2.236[/tex]

2. 236 + 3.162 + 3.162 + 2 + 2.236 = 12.796

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Answer:

x = 30

y = 120

Step-by-step explanation:

okay so , 3x - 30 = 60 (opposite each other)

60 + 30 = 90

90 / 3 = 30

x = 30

all angles have to equal 360

we already have two 60 degrees

60 + 60 = 120

360 - 120 = 240

240 / 2 = 120

y = 120

The employee can choose between Option A or Option B.Option A and B have different prescription drug coverage policies.

When an employee starts a new job, they are usually eligible for a range of benefits, including health insurance. An employee in such a situation has to enroll in a new family health insurance plan.

For instance, the employee estimates that the entire family will fill ten prescriptions per month, which would cost $1,250.Each option has a different cost associated with it.

The total cost of the plan with Option A is higher by $77.50 compared to Option B. On the other hand, Option B has a total cost that is higher by $32.50 compared to Option A.

It is important to note that both plans have different deductibles and copays.An employee should choose a plan that suits them and their family's medical needs.

They should also consider other factors such as the cost of each plan and whether they can afford it. In case of confusion, an employee can always seek guidance from their employer's human resource department.

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Jane have 35 beads in total.

We have, ratio of the number of Mary's beads to the number of Jane's beads is 4 : 7.

The ratio of the number of Jane's beads to the number of Pauline's beads is 5 : 2.

We can Write the ratios as

Mary : Jane  :  Pauline

    4   :  7

            5       :    2

Now, Jane is common in both then

Mary : Jane  :  Pauline

20     :    35   :      14

Thus, Jane have 35 beads in total.

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Second option is the answer to this questions

Answer:

Rosa can make one one unique insosceles triangle

Step-by-step explanation:

cause What is the full meaning of equilateral?

having all sides equal

: having all sides equal. an equilateral triangle. an equilateral polygon. see triangle illustration. : having all the faces equal.

magiging tall triangle lang naman yung triangle ni rosa hindi naman yan equal so insosceles at hindi naman equal side yung 7cm(2x) na stick with 5cm 100 percent sure ako na insosceles yarn

Answer:

To calculate each person's share, we first add up the parts of the ratio, which is 1+3+6=10.

Next, we divide the total amount shared, GH4000, by the ratio sum (10):

GH4000/10= GH400

Finally, to find each person's share, we multiply the ratio part by GH400:

- Harrison's share: 1 part out of 10 parts = 1/10 * GH4000 = GH400

- Anny's share: 3 parts out of 10 parts = 3/10 * GH4000 = GH1200

- Ekua's share: 6 parts out of 10 parts = 6/10 * GH4000 = GH2400

Therefore, Harrison's share is GH400, Anny's share is GH1200, and Ekua's share is GH2400.

The three example situation that run project for human rights are;

All people have the right to human rights, regardless of their ethnicity or nationality.Human rights cover a wide range of rights, such as the freedom from slavery and torture, the right to life and liberty.

Human rights cover a wide range of rights, such as the freedom from slavery and torture, the right to life and liberty, the freedom of speech, the right to a job and an education, among many more.

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The Gini coefficient is 2(−13/30) = -13/15.

The Lorenz curve L(p) can be expressed as the cumulative distribution function of a random variable X. The Gini coefficient is then given by the area between the diagonal line (representing perfect equality) and the Lorenz curve L(p).

In other words, the Gini coefficient is the ratio of the area between the diagonal line and the Lorenz curve to the total area under the diagonal line.

The Lorenz curve for the state can be given as L(p)=p^4/3.Ron can compute the Gini coefficient by finding the area between the diagonal line and the Lorenz curve.

The diagonal line goes from (0,0) to (1,1).The area under the diagonal line is 1/2.

The area between the diagonal line and the Lorenz curve is given by∫[0,1](L(p)−p)dp=

∫[0,1](p^4/3−p)dp

=(1/15)−(1/2)

= -13/30

The Gini coefficient can be negative when the Lorenz curve lies above the diagonal line, which indicates that the distribution is more equal than the hypothetical distribution of perfect equality.

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Loan amount (P): $75,500

Annual Percentage Rate (APR): 7.9%

Loan term (n): 72 months

Monthly interest rate = APR / 12 = 7.9% / 12 = 0.0079

M = P * (r * (1+r)^n) / ((1+r)^n - 1)

M = 75500 * (0.0079 * (1+0.0079)^72) / ((1+0.0079)^72 - 1)

$1,217.17

The maximum possible volume that the box is 446,514.56 cubic millimeters.

Let's assume that we cut squares with side length "x" from each corner of the A4-size paper.

When we fold the resulting tabs upwards, the dimensions of the base of the box will be reduced by 2x on each side.

Therefore, the length of the base of the box will be (300 - 2x) mm, and the width will be (210 - 2x) mm.

The height of the box will be equal to the side length of the squares we cut, which is "x" mm.

The volume of the box is given by the product of its length, width, and height:

Volume = (300 - 2x) (210 - 2x) x

To find the maximum possible volume, we can take the derivative of the volume function with respect to "x" and set it equal to zero:

dV/dx = 0

dV/dx = (300 - 2x)(210 - 2x) + x(-2)(210 - 2x) = 0

(300 - 2x)(210 - 2x) - 2x(210 - 2x) = 0

(300 - 2x)(210 - 2x) - 420x + 4x² = 0

63000 - 840x + 4x² - 420x + 4x² - 420x + 4x³ = 0

8x³ - 1680x + 63000 = 0

x³ - 210x + 7875 = 0

On solving we get x= 46.4 mm

Now, Volume = (300 - 246.4)(210 - 246.4 46.4

= 446,514.56 cubic millimeters.

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Answer:

$54.87

Step-by-step explanation:

The area of the triangular garden is (1/2) x base x height = (1/2) x 6 x 5 = 15 square feet.

The area of the rectangular mulch area is base x height = 12 x 9 = 108 square feet.

The total area to be covered with mulch is 108 - 15 = 93 square feet.

The cost of the mulch is $0.59 per square foot, so the total cost is 93 x $0.59 = $54.87.

Therefore, the total cost of the mulch will be $54.87.

Answer:

Step-by-step explanation:

To find the shortest length of cable needed, we can use trigonometry to calculate the length of the hypotenuse of a right triangle formed by the mountain, the cable car, and the ground.

Let's denote the height of the mountain as H = 3,400 feet and the horizontal distance from the base of the mountain to the point where the cable car will be installed as D = 940 feet.

In the right triangle, the vertical leg represents the height of the mountain, the horizontal leg represents the distance from the base to the point where the cable car is installed, and the hypotenuse represents the length of the cable.

We can use the sine function to relate the angle of inclination, the height, and the hypotenuse of the triangle:

sin(angle) = opposite/hypotenuse

In this case, the angle of inclination is 74 degrees, and the opposite side is the height of the mountain (H).

Therefore, we can write the equation as:

sin(74 degrees) = H/hypotenuse

Rearranging the equation, we have:

hypotenuse = H / sin(74 degrees)

Let's calculate the value of sin(74 degrees) and substitute the values to find the length of the hypotenuse:

sin(74 degrees) ≈ 0.9613

hypotenuse = 3,400 / 0.9613 ≈ 3,535.89 feet

Therefore, the shortest length of cable needed is approximately 3,535.89 feet when rounded to two decimal places.

Step-by-step explanation:

In the case of a hard money or short-term loan, the calculation for the monthly payment is slightly different. Typically, hard money loans have interest-only payments during the loan term, and the principal amount is due at the end of the term.

To calculate the monthly payment for an interest-only loan, you can use the following formula:

Monthly Payment = Loan amount * (Annual interest rate / 12)

Given:

Condo cost = $80,000

Down payment = $30,000

Loan amount = Condo cost - Down payment = $80,000 - $30,000 = $50,000

Annual interest rate = 6.00%

Loan term = 30 months

First, calculate the monthly interest rate:

Monthly interest rate = (Annual interest rate / 100) / 12 = (6.00 / 100) / 12 = 0.005

Next, substitute the values into the formula:

Monthly Payment = $50,000 * 0.005

After performing the calculations, the monthly payment for this hard money loan is $250.

I hope I was helpful

Answer:

10

Step-by-step explanation:

[tex]\displaystyle \biggr(2\frac{3}{8}+1\frac{3}{4}\biggr)+5\frac{7}{8}\\\\2\frac{3}{8}+1\frac{6}{8}+5\frac{7}{8}\\\\(2+1+5)+\biggr(\frac{3}{8}+\frac{6}{8}+\frac{7}{8}\biggr)\\\\8+\frac{16}{8}\\\\8+2\\\\10[/tex]

Make sure to have all fractions have the same denominator so it's easier to add.

The answer choice which shows the image of the given figure after a dilation with a scale factor of 2, centered at (-2, -2) is as attached.

It follows from the task content that the graph which correctly shows the image of the figure after a dilation with a scale factor of 2, centered at the point (-2, -2) is to be identified.

Recall that the image point in such case would be such that the distance of each vertex would be twice what it was from (-2, -2) as in the pre-image.

Hence, the correct representation of the image is as attached.

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The solution to the system of equations is:

x = -36,

y = 23,

z = -10.

To solve the system of linear equations using the inverse method, we first need to represent the system in matrix form.

Let's rewrite the system of equations:

1x + 2y - 1z = 7 ...(1)

2x - 3y - 4z = -3 ...(2)

1x + 1y + 1z = 0 ...(3)

We can express this system in matrix form as AX = B, where:

A = [[1, 2, -1],

[2, -3, -4],

[1, 1, 1]]

X = [[x],

[y],

[z]]

B = [[7],

[-3],

[0]]

Now, to solve for X, we need to find the inverse of matrix A. If A is invertible, we can solve for X by multiplying the inverse of A with B:

X = A⁻¹ × B

Let's calculate the inverse of matrix A:

A⁻¹ = [[-3, 5, -1],

[2, -3, 1],

[-1, 1, 0]]

Now, we can solve for X:

X = A⁻¹B

X = [[-3, 5, -1],

[2, -3, 1],

[-1, 1, 0]]  [[7],

[-3],

[0]]

Multiplying the matrices, we get:

X = [[-3×7 + 5(-3) + (-1)0],

[2×7 + (-3)(-3) + 10],

[-1×7 + 1(-3) + 0*0]]

Simplifying further:

X = [[-21 - 15 + 0],

[14 + 9 + 0],

[-7 - 3 + 0]]

X = [[-36],

[23],

[-10]]

Therefore, the solution to the system of equations is:

x = -36,

y = 23,

z = -10.

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To calculate the interest for 1/2 a month over a period of 8 years, we first need to calculate the total number of months in 8 years:

Total number of months = 8 years x 12 months/year = 96 months

Next, we can calculate the interest for half a month:

Interest = Principal x Rate x Time

Where:

- Principal = $90,900.00

- Rate = 8.25% (annual interest rate)

- Time = 0.5/12 years (half a month, expressed in years)

Rate needs to be converted to a monthly rate, so we divide it by 12:

Rate = 8.25% / 12 = 0.6875% (monthly interest rate)

Time needs to be expressed in years, so we divide it by 12:

Time = 0.5/12 years

Now we can calculate the interest:

Interest = $90,900.00 x 0.006875 x 0.0416667

Interest = $25.08 (rounded to the nearest cent)

Therefore, the interest for 1/2 a month on a principal of $90,900.00 with an annual interest rate of 8.25% over a period of 8 years is $25.08.

Answer:

The interest for 1/2 month is $312.47, and the total interest for 8 years is $30, 032.64

Step-by-step explanation:

Make a plan:

Draw the conclusion:

Hope this helps!

Answer:

 [tex]\dfrac{x^2+8x+8}{2x+4}\\\\[/tex]

Step-by-step explanation:

Simplify:

        [tex]\dfrac{3x + 4}{x +2}+\dfrac{x^2+2x}{2x+ 4}[/tex]

Multiply the denominator and the numerator of the first term by 2,

                        [tex]=\dfrac{2*(3x +4)}{2*(x+ 2)}+\dfrac{x^2+2x}{2x+4}\\\\\\=\dfrac{2*3x+2*8}{2*x +2*2}+\dfrac{x^2+2x}{2x+4}\\\\\\=\dfrac{6x+8}{2x+4}+\dfrac{x^2+2x}{2x+4}[/tex]

                       [tex]\sf = \dfrac{6x+8+x^2+2x}{2x+4}\\\\\text{\bf Combine like terms,}\\\\=\dfrac{x^2+8x+8}{2x+4}\\\\[/tex]

Answer:

(63.69)(100) + π(31.695^2)

= about 9,495 square meters

Answer:

1x3

2x3

                                                            2x2

                                                             3x2

Step-by-step explanation:

with the 1x3 you get 3 and with 2 x 3 you get 6 which means for the first one you get  3/6 .

for the second one 2x2 =4 and 3x2=6 which equals 4/6

Answer:

[tex]\displaystyle \frac{cd^6}{a^4b^2}[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{a^{-4}b^{-2}cd^6}{e^{-7}}\\\\=a^{-4}b^{-2}cd^6e^7\\\\=\frac{cd^6}{a^4b^2}[/tex]

Notice that the variables with negative exponent that were originally in the denominator went to the numerator (like with [tex]e^{-7}[/tex]) and became positive, and vice versa with those originally in the numerator went in the denominator (like with [tex]a^{-4}b^{-2}[/tex]) and also became positive.

Step-by-step explanation:

a‐⁴b‐²cd⁶

_______

e‐⁷

cd⁶e⁷

_____

a⁴b²

Answer:

Step-by-step explanation:

cos A = [tex]\frac{\sqrt{8} }{3}[/tex]

Then since x is not equal to -1 or -7, the necessary expression that is identical to the specified rational expression is (x-1)/(x+7).

The rational expression given is (x+1)(x-1)/(x+7)(x+1). We need to simplify it and find the expression that is equivalent to it when x does not equal -1 or -7.Simplifying the given rational expression:

(x+1)(x-1)/(x+7)(x+1)The factor (x+1) is present in both the numerator and the denominator, so it cancels out.(x-1)/(x+7)

So, the rational expression is simplified to (x-1)/(x+7).

This expression is equivalent to the given rational expression when x does not equal -1 or -7.

Thus, the required expression that is equal to the given rational expression when x does not equal -1 or -7 is (x-1)/(x+7).

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The dimensions of the container in the shape of a rectangular solid are 3.41 m by 4.41 m by 7.81 m.

Let the width of the container be w.

The length of the container is w + 1.

The height of the container is 2w + 1.

The volume of the container is 84 m3.

Set up the following equation to represent the volume of the container:

w(w + 1)(2w + 1) = 84

Solve for w by expanding the left-hand side of the equation:

2w³ + 3w² + w - 84 = 0

Then use the quadratic formula to solve for w:

w = (-3 ± √(3² - 4 × 2 × (-84))) / (4 × 2)

w = (-3 ± √(9 + 672)) / 8

w = (-3 ± √681) / 8

w = (-3 ± 26.09) / 8

w = 3.41 or -5.59

Since w is the width of the container, it must be positive. Therefore, w = 3.41.

The length of the container is w + 1 = 3.41 + 1 = 4.41.

The height of the container is 2w + 1 = 2 × 3.41 + 1 = 7.81.

Therefore, the dimensions of the container are 3.41 m by 4.41 m by 7.81 m.

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The required price of an all-in-one printer that regularly sells for $249.99 at the markdown rate of 32% is  $169.99.

Here, we have,

given that,

Jordan Alexander bought an all-in-one printer that regularly sells for $249.99 at the markdown rate of 32%

now, we have,

32% of $249.99

= 32% × $249.99

=$79.99

so, we have,

the price =$249.99 - $79.99  

               = $169.99

Hence, The required price of an all-in-one printer that regularly sells for $249.99 at the markdown rate of 32% is  $169.99.

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(a) The null hypothesis, H₀, and the alternative hypothesis, H₁, that should be used for the test are as follows:

H₀: μ = 90 (The mean SI score for the population of all smokers is 90)

H₁: μ < 90 (The mean SI score for the population of all smokers has decreased)

(b) If the psychologist decides not to reject the null hypothesis, she might be making a Type II error. A Type II error occurs when the null hypothesis is not rejected, but it is actually false. In this case, it would mean that the psychologist fails to detect a decrease in the mean SI score for smokers, even though it has truly decreased.

(c) A Type I error would be rejecting the hypothesis that μ = 90 when it is actually true. In other words, it would mean concluding that the mean SI score for all smokers has decreased (H₁) when, in reality, it has not changed or remains at 90 (H₀).

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There were 5 1/4 bags of popcorn left after eating 4 bags.

To find out how much popcorn was left after eating 4 bags, we need to subtract the amount eaten from the total amount Brianna made.

Brianna made 9 1/4 bags of popcorn, which can be represented as a mixed number. To perform calculations, let's convert it to an improper fraction:

9 1/4 = (4 * 9 + 1) / 4 = 37/4

Now, let's subtract the 4 bags eaten from the total:

37/4 - 4

To subtract fractions, we need a common denominator. The common denominator of 4 and 1 is 4. Therefore, we can rewrite the expression as:

37/4 - 4/1

Now, let's find a common denominator and subtract the fractions:

37/4 - 16/4 = (37 - 16) / 4 = 21/4

The result is 21/4, which is an improper fraction. Let's convert it back to a mixed number:

21/4 = 5 1/4

Therefore, there were 5 1/4 bags of popcorn left after eating 4 bags.

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[tex]\begin{array}{llll} \text{\LARGE -3}(4x-7y&=&2)\\ ~~ \text{\LARGE 4}(3x-3y&=&6) \end{array}\implies \stackrel{ \textit{\LARGE eliminating "x"} }{\begin{array}{llll} -12x+21y&=&-6\\ ~~ 12x-12y&=&24\\\cline{1-3}\\ \qquad 0+9y&=&18 \end{array}} \\\\[-0.35em] ~\dotfill\\\\ \begin{array}{llll} \text{\LARGE -3}(4x-7y&=&2)\\ ~~ \text{\LARGE 7}(3x-3y&=&6) \end{array}\implies \stackrel{ \textit{\LARGE eliminating "y"}}{\begin{array}{llll} -12x+21y&=&-6\\ ~~ 21x-21y&=&42\\\cline{1-3}\\ \quad 9x+0&=&36 \end{array}}[/tex]

now to get them hmmm we can use either equation, say hmmm let's use the 2nd one

[tex]9x+0=36\implies x=\cfrac{36}{9}\implies \boxed{x=4} \\\\\\ \stackrel{\textit{substituting on the 1st equation}}{4(4)-7y=2}\implies 16-7y=2\implies 16=7y+2 \\\\\\ 14=7y\implies \cfrac{14}{7}=y\implies \boxed{2=y} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill~(4~~,~~2)~\hfill~[/tex]

quick clarification for a misleading material in the question

what's the second pair?  well, is a system of equations of two lines, they only meet at one point, so there's only one pair, or we can say the second pair is the same as the first pair, redundant and unnecessary, but hmmm so it's.

Answer:

Question 1:

In order to eliminate the x variables in this systems of equations problem using the elimination method, the value of x in the top and bottom equations must cancel each other out.

In order to get this to happen, we can multiply the top equation by 3 and the bottom equation by -4. This way the x value of the top equation becomes 12x and the x value of the bottom equation becomes -12x. These values would cancel each other out, letting you solve for y.

So, question 1 answer: (3, -4) OR (-3, 4)

(both will result in getting a 12x and -12x in the top or bottom that will cancel)

Question 2:

The idea from question 1 can be applied here too:

To eliminate the y variables, we must make the y values in the top and bottom equations cancel each other out.

We can multiply the top equation by 3 and the bottom equation by -7, resulting in -21y in the top equation, and 21y in the bottom equation.

So, question 2 answer: (3, -7) OR (-3, 7)

(both will result in getting a 21y and -21y in the top or bottom that will cancel)

Rajani's age is calculated to be 24 years old.

Let's assume the two-digit number representing Rajani's age is written as AB,

where

A represents the tens digit and

B represents the units digit.

According to the given information, Rajani's age, AB, is equal to:

Based on this information, we can form the equation:

10A + B = 4(A + B) + 6(A * B)

10A + B = 4A + 4B + 6AB

rearranging the terms:

10A - 4A = 4B + 6AB - B

6A = 3B + B(6A - 4)

6A = 3B + 2B(3A - 2)

Dividing both sides by 3A - 2:

6A / (3A - 2) = 3B / (3A - 2) + 2B

at this point, we need to check the possible values for A and B that satisfy this equation. Since the problem states that Rajani's age consists of two digits, A and B must be integers ranging from 0 to 9.

By trying different values for A and B, we find that A = 2 and B = 4 satisfy the equation:

6 * 2 / (3 * 2 - 2) = 3 * 4 / (3 * 2 - 2) + 2 * 4

12 / 4 = 12 / 4 + 8

3 = 3 + 8

The equation is true for A = 2 and B = 4.

Therefore, Rajani's age is 24 years old.

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