3 years ago

It takes three identical water pumps 7 hours to fill a pool, Find the constant of variation.

Mathematics

1 answer:

guapka [62]3 years ago

4 0

Answer:

Step-by-step explanation:

You have to multiply 3 and 7 to get 21.

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Kerry wants to give each student in her class 1/2

qwelly [4]

Answer:

Step-by-step explanation:

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2 years ago

-5 1/2 - 4 1/4 + 6 3/4

ruslelena [56]

Answer:

-3

Hope this helps :)

Have a great day !

5INGH

Step-by-step explanation:

$-5\frac{1}{2} - 4\frac{1}{4} +6 \frac{3}{4} = -5\frac{2}{4} - 4\frac{1}{4} +6 \frac{3}{4} = -9\frac{3}{4} +6\frac{3}{4}=-3$

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2 years ago

How many milliliter of pure acid should be added to 10 ml of 20% acid to make 50% acid solution? Round answer to the nearest hun

Ymorist [56]

We have 10 ml of 20% acid to which we need to add "x" milliliters of 100% acid to make 50% acid.

.20 * 10 + 1.00x = .50 * (10 +x)
in which "x" is the volume of the 100% acid to be added.
2 + x = 5 + .5 x
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x = 6 milliliters

Source:
http://www.1728.org/mixture.htm
Scroll down to problem B

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3 years ago

HELP FOR LOTS OF POINTS PLSSSS AND BRAINLIEST!!!!!

qwelly [4]

Answer:

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2 years ago

When a tree was planted, it was 3 ft tall. Since then, it has been growing at a rate of 0.25 ft per year. How long will it take

anzhelika [568]

I think it will be 60 years. 15 divided by 0.25 is 60.

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3 years ago