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andrezito [222]

3 years ago

7

Simplify the expression -7(3e-2f+4)+6e-2

1 answer:

Shkiper50 [21]3 years ago

5 0

Answer: here it is 14f-30-15e

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Which of the following numbers is not part of the solution to x > 1?

masha68 [24]

The answer is 1. Because 1=1, 1 is not > 1

3 0

3 years ago

Read 2 more answers

the sum of two members is 30. Three times one number is 6 more than 4 times the other. What are the two numbers?

Luden [163]

Answer:

Step-by-step explanation:

Therefore, X + Y = 30. Also, Their difference is 6. Therefore, X - Y = 6. Therefore, the two numbers are X = 18 and Y = 12.

8 0

3 years ago

The circumference of the equator of a sphere was measured to be 82 82 cm with a possible error of 0.5 0.5 cm. Use linear approxi

True [87]

Answer:

The maximum error in the calculated surface area is approximately 8.3083 square centimeters.

Step-by-step explanation:

The circumference ( $s$ ), in centimeters, and the surface area ( $A_{s}$ ), in square centimeters, of a sphere are represented by following formulas:

$A_{s} = 4\pi\cdot r^{2}$ (1)

$s = 2\pi\cdot r$ (2)

Where $r$ is the radius of the sphere, in centimeters.

By applying (2) in (1), we derive this expression:

$A_{s} = 4\pi\cdot \left(\frac{s}{2\pi} \right)^{2}$

$A_{s} = \frac{s^{2}}{\pi^{2}}$ (3)

By definition of Total Differential, which is equivalent to definition of Linear Approximation in this case, we determine an expression for the maximum error in the calculated surface area ( $\Delta A_{s}$ ), in square centimeters:

$\Delta A_{s} = \frac{\partial A_{s}}{\partial s} \cdot \Delta s$

$\Delta A_{s} = \frac{2\cdot s\cdot \Delta s}{\pi^{2}}$ (4)

Where:

$s$ - Measure circumference, in centimeters.

$\Delta s$ - Possible error in circumference, in centimeters.

If we know that $s = 82\,cm$ and $\Delta s = 0.5\,cm$ , then the maximum error is:

$\Delta A_{s} \approx 8.3083\,cm^{2}$

The maximum error in the calculated surface area is approximately 8.3083 square centimeters.

6 0

3 years ago

The stadium is like a hemisphere with a radius of 150 feet last month the owners of the stadium paid 0. 05 per cubic foot to cov

GREYUIT [131]

The total cost for utilities last month is 353,571.43.

<h3>What is the total cost for utilities last month?</h3>

The total cost for utilities last month can be determined by multiplying the volume of the stadium by the cost per cubic foot.

The volume of the stadium can be determined by using the formula for the volume of a hemisphere.

Volume of a hemisphere = Volume of a hemisphere = (2/3) x (n) x (r^3)

n = 22/7

r = radius

2/3 x 22/7 x 150³ = 7071,428.57

The total cost for utilities last month = 7071,428.57 x 0.05 = 353,571.43

To learn more about volume, please check: brainly.com/question/13705125

6 0

2 years ago

If x-a is a factor of polynomial x3-mn2-2nax+na2 prove that a=m+n and a is not = 0

marshall27 [118]

Step-by-step explanation:

hope this helps

pls mark me brainliest

5 0

3 years ago