4 years ago

I’m struggling here plz help

Mathematics

1 answer:

miss Akunina [59]4 years ago

4 0

So to find h, you need to isolate that variable onto one side.

To do this, divide both sides by πr², and your answer will be $\frac{V}{\pi r^2}=h$ , or the 2nd option.

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There are x boys playing in the park. The number of girls playing in the park is equal to the square root of the number of boys.

konstantin123 [22]

Answer:

Option A. 36

Step-by-step explanation:

Let

x-------> the number of boys

y------> the number of girls

we know that

$x+y=42$ -----> equation A

$y=\sqrt{x}$ -----> equation B

using a graphing tool to solve the system of equations

Remember that the solution is the intersection point both graphs

The solution is the point (36,6)

see the attached figure

therefore

The number of boys is 36

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3 years ago

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IgorLugansk [536]

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3 years ago

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Sladkaya [172]

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3 years ago

Jamin is mixing a small amount of cement. The bag of cement mix says to use 1 part mix and 4 parts water. Jamin needs 10 gallons

labwork [276]

I'm pretty sure you would use 2.5 gallons

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3 years ago

13) -3x - 4y = 8 -4x - 3y=6

Dvinal [7]

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8 (1)

-4x - 3y=6 (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32 (3)

12x + 9y= -18 (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32 - (-18)

<=> 7y = - 14

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Replace y with - 2 in (3), we have x = 0

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4 years ago