A rectangular in-ground pool is 45 feet long, 16 feet wide and 4 feet deep.

Mathematics

1 answer:

Georgia [21]2 years ago

3 0

Answer:

2880 cubic feet

Step-by-step explanation:

45*16*4 = 2880

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A community center is serving a free meal to senior citizens. The center plans to feed 700 people in 4 hours. Write and solve an

Arada [10]

A. If the center plans to feed 700 people in 4 hours, then in order to find the average number of people the center is planning to feed each hour is 700/4 which is equal 175. So, the center is planning to feed 175 people per hour.

B. If during the first hour and a half, the center fed 270 people, find the remaining people to feed left: 700 - 270 = 430 people left to feed.

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2 years ago

Express the following in the usual form<br>(a) 6.25×10-⁵

andrew-mc [135]

Answer:

0.0000625

Step-by-step explanation:

$10^{-5}=0.00001$

$6.25*10^{-5}=6.25*0.00001=0.0000625$

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3 years ago

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Is a rise of -7 the same as a fall of 7

iVinArrow [24]

The rise of -7 means that there is 7 less. The fall of 7 would mean that it is also 7 less. So, yes. They are both the same thing.

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3 years ago

Find the values of x and y.

vova2212 [387]

Look at the picture.

We have the equation (1) 12x + 4y = 40.

We know, the sum of the acute angles in a right triangle is 90°.

Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

40 + 17x - y = 90 <em>subtract 40 from both sides</em>

17x - y = 50 (3)

We have the system of equations:

$\left\{\begin{array}{ccc}12x + 4y = 40&|:4\\17x-y=50\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x + y = 10\\17x-y=50\end{array}\right}\ \text{add both side of equations}\\.\qquad20x=60\qquad|:20\\.\qquad x=3$