Find the area of the isosceles trapezoid.
10 cm
9 cm
18 cm
OA.126 cm²
OB.91 cm²
OC. 252 cm²
OD. 63 cm2

Answer:

60 in.²

Step-by-step explanation:

A = (B + b)h/2

A = (14 in. + 6 in.)(6 in.)(1/2)

A = 60 in.²

Answer:

60 in^2

Step-by-step explanation:

solution Given:

Area of the shaded region or trapezoid = Area of Rectangle ABCD - Area of triangle CDE

we have

Area of Rectangle ABCD= length* breadth =BC*AB=14*6=84 in^2

Area of Triangle CDE= 1/2* base*height=1/2*DE*CD=1/2*8*6=24 in ^2

Now

Area of the shaded region or trapezoid = Area of Rectangle ABCD - Area of triangle CDE

=84 in^2-24in^2

=60 in^2

Similarly, we have another way to calculate the area of the trapezoid;

Area = 1/2*h*(side1*side2)

=1/2*AB*(AE+BC)

=1/2*6*(6+14)

=60 in^2

Your lab regularly runs tests on mice, resulting in several bags of leftover mouse food sitting in your storage closet, the lab will need more food around day 116 of the year.

To determine if the lab's reserve of mouse meals will hold up for the entirety of subsequent year, we need to research the fee at which the food reserves are reducing.

Let's calculate the common day by day decrease in meals reserves:

Average daily decrease = (Initial food reserves - Final food reserves) / (Number of days)

Initial food reserves = 112.6 kg

Final food reserves = 109.1 kg

Number of days = 8 (from December 13 to December 21)

Average daily decrease = (112.6 kg - 109.1 kg) / 8 ≈ 0.4375 kg/day

Number of days until food reserves reach zero = Final food reserves / Average daily decrease

Number of days until food reserves reach zero = 109.1 kg / 0.4375 kg/day ≈ 249.14 days

Thus, the lab will need more food approximately 365 - 249.14 = 115.86 days into the year. Round it up to the nearest whole number, and the lab will need more food around day 116 of the year.

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The cost of the car is $59,711.4.

Since,  A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100.

Given here:

Price of the car = $46,890.00,

percent down: 26%,

finance cost: $792.00 per month for 60 months

Thus Total cost= $46,890.00×0.26+60×792

                        = $12191.4 + $47520

                        = $59,711.4

Hence, The cost of the car is $59,711.4

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Answer:

Step-by-step explanation:

\[y={5x,x \n I\]

={...,-10,-5,0,5,10,...}

[tex]{\Large \begin{array}{llll} y=\{5x; ~~ x\in \mathbb{Z}\} \end{array}} \qquad \textit{integers multiples of 5}[/tex]

Step-by-step explanation:

Tess's expression is NOT equivalent because she forgot to include the - sign when multiplying -7 and -4.

Bernette's expression is NOT equivalent because she did 2-7 first which is not correct. Since the -7 is connected to the parenthesis, she needs to fully distribute the -7 into the parenthesis before including the 2.

Lucy's expression IS equivalent because she factored it correctly and distributed the -7 into the parenthesis.

The angle 7 is the alternative interior angle to angle 2.

Given that,In the diagram a || bWe need to find the alternate interior angle to <2 .Alternate interior angles are the angles that are formed when a transversal crosses two parallel lines.

They are the angles that are on opposite sides of the transversal and inside the two parallel lines.

Thus, in the given diagram, the angle that is opposite to angle <2 and is inside the two parallel lines a and b is the alternate interior angle to angle <2.

We can see that the alternate interior angle to angle <2 is <7. Therefore, the alternate interior angle to angle <2 is <7.

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The producer surplus is approximately $663.772.

To find the producer surplus, we need to calculate the area between the supply curve and the selling price line.

The supply curve is given by the equation:

[tex]s(x) = 180 + 0.3x^{(3/2)[/tex]

where x is the product quantity.

Let's set the selling price to $250.

We want to find the quantity (x) at which the selling price intersects the supply curve. So, we can set:

[tex]250 = 180 + 0.3x^{(3/2)[/tex]

Now, let's solve this equation to find the value of x:

[tex]250 - 180 = 0.3x^{(3/2)[/tex]

[tex]70 = 0.3x^{(3/2)[/tex]

Divide both sides by 0.3:

[tex]x^{(3/2)} = 70 / 0.3[/tex]

[tex]x^{(3/2)} = 233.33[/tex]

Now, we can solve for x by raising both sides to the power of 2/3:

[tex]x = (233.33)^{(2/3)[/tex]

x ≈ 24.88

So, the quantity (x) at which the selling price intersects the supply curve is approximately 24.88.

To calculate the producer surplus, we need to find the area between the supply curve and the selling price line from 0 to x.

The formula for the producer surplus is:

Producer Surplus = ∫[0 to x] (s(x) - Selling Price) dx

Using the given supply curve [tex]s(x) = 180 + 0.3x^{(3/2)[/tex] and the selling price of $250, we can evaluate the integral:

Producer Surplus = ∫[0 to 24.88] ([tex]180 + 0.3x^{(3/2)[/tex]) dx

Calculating the integral we get,

= 663.772

Therefore, the producer surplus is approximately $663.772.

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When a house is sold for $73,400.00 with a commission rate of 5 1/2 %, the agent's earnings would be $2,220.35.

To calculate the agent's earnings, we need to determine the total commission earned from the sale of the house and then calculate 55% of that amount.

First, we need to calculate the total commission earned from the sale of the house. The commission rate is given as 5 1/2 %, which can be written as a decimal as 0.055.

The total commission can be found by multiplying the sale price of the house ($73,400.00) by the commission rate (0.055):

Total Commission = $73,400.00 * 0.055

= $4,037.00

Now, we need to determine the agent's earnings, which is 55% of the total commission. We can calculate this by multiplying the total commission by 55% or 0.55:

Agent's Earnings = $4,037.00 * 0.55

= $2,220.35

Therefore, when a house is sold for $73,400.00 with a commission rate of 5 1/2 %, the agent's earnings would be $2,220.35.

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Answer:

∡C=53°

∡F=102°

AB=11

DF=27

Step-by-step explanation:

Similar triangles have the same shape but not necessarily the same size. If two triangles are similar, their corresponding angles are equal and their corresponding sides are proportional.

Some of the properties of similar triangles:

For the question:

In ΔABC and ΔEFD

Since the respective corresponding angles are equal.

so,

∡A=∡E=25°

∡B=∡F=102°

∡C=∡D=53°

so, ΔABC  [tex]\sim[/tex]  ΔEFD

Again

Since their corresponding sides are proportional.

First, we need to find the ratio of their respective side:

DE: CA=63:14=9:2 when compared to big triangle to small triangle.

CA: DE=14:63=2:9 when compared to big triangle to small triangle.

AB=2/9*EF=2/9*49.5=11

DF=9/2*CB=9/2*6=27

The percent increase of total interest paid between purchasing one point and purchasing no points is approximately [tex]6.9[/tex]%.

To calculate the percent increase of total interest paid between purchasing one point and purchasing no points, we need to find the difference in total interest and then calculate the percentage increase.

For Example 1 (No Points), the total interest paid is $[tex]216,370.00[/tex].

For Example 2 (One Point), the total interest paid is $[tex]201,250.00[/tex].

The difference in total interest is $[tex]216,370.00[/tex] - $[tex]201,250.00[/tex] = $[tex]15,120.00[/tex].

To calculate the percentage increase, we divide the difference by the total interest of Example 1 and multiply by [tex]100[/tex]:

[tex]\[\frac{15,120.00}{216,370.00} \times 100 \approx 6.9\%\][/tex]

Therefore, it can be said that the percent increase of total interest paid between purchasing one point and purchasing no points is approximately [tex]6.9[/tex]% (rounded to the nearest tenth).

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Answer:

[tex]9\frac{2}{3}[/tex]

Step-by-step explanation:

[tex]\displaystyle 1\frac{1}{4}+\biggr(3\frac{2}{3}+5\frac{3}{4}\biggr)\\\\1\frac{3}{12}+3\frac{8}{12}+5\frac{9}{12}\\\\(1+3+5)+\biggr(\frac{3}{12}+\frac{8}{12}+\frac{9}{12}\biggr)\\\\9+\frac{20}{12}\\\\9+1\frac{8}{12}\\\\9+\frac{2}{3}\\\\9\frac{2}{3}[/tex]

Again, least common denominator is 3*4=12

Step-by-step explanation:

1 1/4 + ( 3 2/3 + 5 3/4)

First change them from mixed fractions to normal fractions.

= 5/4 + ( 11/3 + 23/4)

Then Find the LCM(lowest common factor) of 4 and 3 which is 12 so we'll multiply both 4 and 3 to the number so the answer would be 12. and also if we multiply the denominator we do the same to the numerator.

= 5/4 + (44/12 + 69/12)

add them.

= 5/4 + (44 + 69/12)

now find their LCM and do the same to them since 4 is a factor of 12 we'll multiply it by 3 to get 12 as a denominator to add.

= 5/4 + 113/12

= 15/4 + 113/12

= 15 + 113/12

add them.

= 128/12

Divide both numerator and the denominator by the LCM.

= 64/6

= 32/3

Answer: 32/3 or in mixed fraction: 10 2/3

Step-by-step explanation:

for the first one the sales on table is going downn while the days are increasing

for the second one the arrow going up signifies that the sales are going up according to days

He started walking the dog at the time 12:30 p.m.

We know that Dakota completed hera chores at 1:32 p.m. and that she spent a total of 48 minutes doing them.

That means she must have started her chores at:

⇒    1:32 p.m. - 48 minutes = 12:44 p.m.

We know that she walked the dog for 14 minutes.

We want to find out what time she started walking the dog,

so subtract 14 minutes from the time she started doing chores,

⇒ 12:44 p.m. - 14 minutes = 12:30 p.m.

Therefore,  

Dakota started walking the dog at 12:30 p.m.

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Answer:

Amanda has 8 cousins

Step-by-step explanation:

Let C be the number of cousins Caleb has, A be the number of cousins Amanda has, and R be the number of cousins Ruby has:

[tex]C=2A\\R=5\\R=C-11\\\\R=C-11\\5=C-11\\16=C\\\\C=2A\\16=2A\\8=A[/tex]

Therefore, Amanda has 8 cousins.

Answer:

Amanda has 8 cousins.

Step-by-step explanation:

Let's use algebraic variables to solve the problem.

Let's assume the number of cousins Amanda has is represented by 'A'.

Since Caleb has twice as many cousins as Amanda, the number of cousins Caleb has is '2A'.

And Ruby has 5 cousins, which is 11 less than what Caleb has, so the number of cousins Caleb has is '5 + 11 = 16'.

Equating the two expressions for the number of cousins Caleb has:

2A = 16

Now we can solve for 'A', the number of cousins Amanda has:

Divide both sides of the equation by 2:

A = 16 / 2

A = 8

Therefore, Amanda has 8 cousins.

Answer:

a is -13

b is 31

c is 24

Step-by-step explanation:

The length of the curve described by the function x = (y - 5)² where 0 ≤ y ≤ 1, is approximately A. 7.982.

Substituting the values back into the arc length formula, we have:

L = ∫√(dx/dt)² + (dy/dt)² dt

L = ∫√(2(t - 5))² + 1² dt

L = ∫√(4(t - 5)² + 1) dt

Now, let's integrate this expression over the given range 0 ≤ y ≤ 1:

L = ∫[0,1]√(4(t - 5)² + 1) dt

Approximating the integral with the midpoint rule:

L ≈ ∑[i=0 to n-1] √(4(t_i+1 - 5)² + 1) Δt

Let's choose n = 1000 for a reasonably accurate result. Thus, Δt = (1 - 0) / 1000 = 0.001.

Calculating the sum:

L ≈ ∑[i=0 to 999] √(4(t_i+1 - 5)² + 1) * 0.001

Performing this calculation, we find that L ≈ 7.982.

Therefore, the length of the curve described by the function x = (y - 5)² where 0 ≤ y ≤ 1, is approximately 7.982.

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The scale factor that was used to create triangle D' include the following: C. Scale factor of 1/2

We have,

In Mathematics and Geometry, the scale factor of a geometric figure can be calculated by dividing the dimension of the image (new figure) by the dimension of the pre-image (original figure):

Compare the corresponding sides of triangle D and triangle D':

Side DE in triangle D corresponds to side D'E in triangle D'.

Side EF in triangle D corresponds to side E'F in triangle D'.

Side FD in triangle D corresponds to side F'D in triangle D'.

Determine the ratios of the corresponding sides:

The ratio of side D'E to DE is 2:1.

The ratio of side E'F to EF is 2:1.

The ratio of side F'D to FD is 2:1.

Scale factor = Dimension of image (new figure)/Dimension of pre-image (original figure)

By substituting the given dimensions into the formula for scale factor, we have the following;

Scale factor = Dimension of image/Dimension of pre-image

Scale factor = 8/16 = 6/12 = 10/20

Scale factor = 1/2.

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Liz table that shows her compounded interest should be completed the following way;

Original Principal                                                                               $2,000  

Interest for First Quarter        $2,000.00 x 8% ×1/4 =  $40  = + $  40            

Amount/End of First Quarter  $2,000.00+ $40.00 = $2040 = + $ 2040

Interest for Second Quarter  $ 2040 × 8% ×1/4 = $ 40.8  =  + $ $ 40.8

Amount/End of Second Quarter 2040  + 40.8 = $ 2080.8 = + $  2080.8

Interest for Third Quarter 2080.8  × 8% ×1/4 = $ 41.616 = + $ 41.616

Amount/End Third Quarter 2080.8+41.616 = $2122.416 = + $ 2122.416

Interest/Fourth Quarter 2122.416  × 8% ×1/4 = $ 42.4483 = + 42.4483

Amount/ End of Fourth Quarter $2122.416 + $42.4483 = 2164.8643

Quarterly compound interest is a type of interest that is calculated and paid out four times in a year. This means that the interest earned in one quarter is added to the principal amount, and then interest is calculated on the new, larger principal amount in the next quarter.

Quarterly compound interest is more profitable than annual compound interest in many cases, however, it depends on the percentage increase.

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Answer:

To find the length of AB, we can use the property that two tangents to a circle from the same external point are equal. This means that AB = AD. Substituting the given values, we get:

8x = x + 9

Solving for x, we get:

x = 1.5

Therefore, AB = 8x = 8(1.5) = 12.

To check our answer, we can use the Pythagorean theorem on triangle ABD, since AB is perpendicular to BD at the point of tangency. We have:

AB^2 + BD^2 = AD^2

Substituting the values, we get:

12^2 + BD^2 = (1.5 + 9)^2

Simplifying, we get:

BD^2 = 56.25

Taking the square root of both sides, we get:

BD = 7.5

Hence, the length of AB is 12 and the length of BD is 7.5.

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The value of the given expression sin(45°) + cos(67°) - 4554 + 97 + 64555 + 755577652 - 6622 is approximately 755,642,129.099.

To find the value of the expression sin(45°) + cos(67°) - 4554 + 97 + 64555 + 755577652 - 6622, we can start by evaluating the trigonometric functions and then simplifying the arithmetic operations.

First, let's find the values of sin(45°) and cos(67°).

sin(45°) is equal to √2/2, approximately 0.7071, and cos(67°) is equal to 0.3919 (rounded to four decimal places).

Now, we can substitute these values into the expression:

0.7071 + 0.3919 - 4554 + 97 + 64555 + 755577652 - 6622

Next, let's perform the arithmetic operations:

0.7071 + 0.3919 = 1.099 (rounded to three decimal places)

1.099 - 4554 + 97 + 64555 + 755577652 - 6622

Simplifying further:

-4554 + 97 + 64555 = 60098

60098 + 755577652 - 6622 = 755642128

Finally, we have:

1.099 + 755642128 = 755642129.099

Note: The answer has been rounded to three decimal places for intermediate steps and provided as an approximate value due to rounding in trigonometric functions.

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Answer:

Step-by-step explanation:

[tex]P(blue)=\frac{3}{10} \\[/tex]

For sample of 500 jellybeans:

   [tex]E(blue)=\frac{3}{10}\times500=150[/tex]

Solution: 150 blue jellybeans.

Answer:

x = 12.85714286 (as a decimal)

x = [tex]\frac{90}{7}[/tex] (as a fraction)

Step-by-step explanation:

These 2 triangles are similar.

[tex]\frac{20}{x} = \frac{20 + 8}{x + 18}[/tex]

20(x + 18) = x(20 + 8)

20x + 360 = 20x + 8x

20x + 360 = 28x

360 = 28x

x = 12.85714286 or x = [tex]\frac{90}{7}[/tex]

I believe the correct anwser is 45

Answer:

37.7 feet

Step-by-step explanation:

The circumference of a circle can be calculated using the formula: Circumference = 2 * π * radius, where π (pi) is approximately 3.14159.

For example, if we have a circle with a radius of 3 feet, its circumference would be approximately 18.85 feet (rounded to five decimal places).

When we double the radius to 6 feet, the circumference also doubles. In this case, the circumference would be approximately 37.70 feet (rounded to five decimal places).

In summary, when the radius of a circle doubles, the circumference also doubles, maintaining a direct proportional relationship between the two measurements.

To maximize profit, the factory should manufacture 8 bicycles and 12 motorcycles.

Let us assume the number of bicycles as 'x'

Let us assume the number of motorcycles as 'y'.

The time constraint on machine A can be expressed as: 5x + 4y ≤ 120

The time constraint on machine B can be expressed as: 4x + 8y ≤ 144

To maximize profit, we need to maximize the objective function:

P = 40x + 50y

By graphing the constraints and finding the feasible region, we can determine the optimal solution.

Graphing the constraints:

For 5x + 4y ≤ 120:

Let's solve for y in terms of x: y ≤ (120 - 5x) / 4

For 4x + 8y ≤ 144:

Let's solve for y in terms of x: y ≤ (144 - 4x) / 8

The feasible region will be the intersection of the shaded regions:

y ≤ (120 - 5x) / 4

y ≤ (144 - 4x) / 8

Now, we will find the corner points of the feasible region:

When x = 0, y = 0

When x = 24, y = 0

When x = 8, y = 12

Substituting values into objective function P = 40x + 50y:

When x = 0, y = 0:

P = 40(0) + 50(0)

P = 0

When x = 24, y = 0:

P = 40(24) + 50(0)

P= 960

When x = 8, y = 12:

P = 40(8) + 50(12)

P = 1360.

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Each member should still raise, on average, at least $39.96 to meet the goal.

Answer:

C) [tex]x^2+y^2=16[/tex]

Step-by-step explanation:

[tex](x-h)^2+(y-k)^2=r^2\\(x-0)^2+(y-0)^2=4^2\\x^2+y^2=16[/tex]

Therefore, C is correct

Answer:

option C:

x² + y² = 16

Step-by-step explanation:

general equation of a circle is,

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the center of the circle

           r is the radius of the circle

according to the question the circle is centered at the origin so h and k will be 0

and r = 4

by substituting the values in the equation,

(x - 0)² + (y - 0)² = 4²

x² + y² = 16

The probability that exactly seven claims will be filed during the next week is approximately 0.1038 or 10.38%.

To determine the probability of exactly seven claims being filed during the next week, we need to use the Poisson distribution. The Poisson distribution is commonly used to model the number of events occurring in a fixed interval of time or space when the events occur with a known average rate and independently of the time since the last event.

In this case, we are given that the average number of claims filed per week is seven. This average rate is also the parameter λ (lambda) of the Poisson distribution.

The probability mass function (PMF) of the Poisson distribution is given by:

P(X = k) = (e^(-λ) * λ^k) / k!

Where X is the random variable representing the number of claims filed, k is the specific number of claims we are interested in (in this case, k = 7), e is the base of the natural logarithm (approximately 2.71828), and k! represents the factorial of k.

Substituting the given average rate of seven claims per week into the equation, we have:

P(X = 7) = (e^(-7) * 7^7) / 7!

Calculating this expression will give us the probability of exactly seven claims being filed during the next week.

P(X = 7) ≈ 0.1038

Therefore, the probability that exactly seven claims will be filed during the next week is approximately 0.1038 or 10.38%.

This means that, on average, we can expect approximately 10.38% of weeks to have exactly seven claims filed based on the given average rate of seven claims per week.

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