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Vilka [71]
3 years ago
5

Please help I'm so confused

Mathematics
1 answer:
alex41 [277]3 years ago
4 0

Answer:

Step-by-step explanation:

V = 1/3 pi r^2 h                Multiply both sides by 3

3V = pi r^2 h                   Divide by pi * h

\frac{3*V}{\pi * h}    = r^2                       Take the square root

\sqrt{\frac{3V}{\pi*h} }      = r  

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12 dogs decreased by 25%
il63 [147K]
The answer would be 8 dogs.

6 0
3 years ago
Three fishermen caught 74 fish. They divide them equally. How many are left over ?
otez555 [7]

Answer:

2 left

Step-by-step explanation:

74/3 = 24.

24*3 = 72

74-72 = 2

8 0
3 years ago
The width of a rectangular field is 20 feet less than its length. The area of the field is 12,000 ft? What is the length of the
Scilla [17]

Answer:

The answer is 120 feet.

Step-by-step explanation:

The area of the field (A) is:

A = w · l       (w - width, l - length)

It is known:

A = 12,000 ft²

l = w - 20

So, let's replace this in the formula for the area of the field:

12,000 = w · (w - 20)

12,000 = w² - 20

⇒ w² - 20w - 12,000 = 0

This is quadratic equation. Based on the quadratic formula:

ax² + bx + c = 0      ⇒  

In the equation w² - 20w - 12,000 = 0, a = 1, b = -20, c = -12000

Thus:

So, width w can be either

or

Since, the width cannot be a negative number, the width of the field is 120 feet.

6 0
3 years ago
Read 2 more answers
Which set of values are equivalent. ,
Gnoma [55]
3/10, 30%, 0.3

because 3/10 basically means 3 out of 10. that's 30%. 0.3 is just 3/10 in decimal form.
3 0
3 years ago
Ryan has his own business selling watches, and he wants to monitor his profit per watch sold. The expression <img src="https://t
Umnica [9.8K]

Answer:

(-x² + 99x +200)/x

Step-by-step explanation:

Profit per watch = (200 - x)/x

Profit per band = 100 – x

New profit = (200 - x)/x + 100 – x

New profit = (200 - x)/x + x(100 – x)/x

New profit = (200 - x + 100x – x²)/x

New profit = (-x² + 99x +200)/x

6 0
3 years ago
Read 2 more answers
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