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3 years ago

The volume of a cone is 196π ft ^3 . It's radius is 7 ft. Find the height.

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

4 0

Answer:

the height is about 12

Step-by-step explanation:

plug into the equation $V=\pi r^{2}\frac{h}{3}$

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3 years ago

I dont really understand this??

jeyben [28]

Answer:

$x\geq -53$

Step-by-step explanation:

The inequality includes -53.

The interval notation is $\:[-53,\:\infty \:)$

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3 years ago

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Find the exponential function that satisfies the given conditions: initial value = 70, decreasing at a rate of 0.43% per week

EleoNora [17]

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3 years ago

If x varies inversely as y 2, and x = 2 when y = 20, find x when y = 5.

Dominik [7]

Step-by-step explanation:

$x = \frac{k}{y}$

x varies inversely as y. This means that x is equal to the inverse of y which can be translated as x = 1/y but the problem said that x is not exactly equal to the inverse of y. Therefore, we need to introduce a factor k. Factor k will represent the word "varies" in the problem.

To illustrate:

$x = \frac{k}{y}$

Since we don't have the value of k, we have to solve for it by using the first values of x and y which was given as x=2 and y=20.

$x = \frac{k}{y} \\ 2 = \frac{k}{20} \\ k = 2(20) = 40$

Now that we have the value of k, we can now solve for the value of x when y=5.

$x = \frac{k}{y} \\ = \frac{40}{5} \\ = 8$

Therefore, when y is 5, the value of x is 8.

6 0

3 years ago

Example 3

AysviL [449]

ANSWER:
Peremeter=150 feet
Let wodth be x
then,length be x +15
ATQ
x+x+15=150
2x+15=150
2x=150-15
2x=135
x=135/2
x=67.5 feet
Then:
WIDTH=67.5 feet
LENGTH=67.5+15
= 82.5 feet

6 0

3 years ago