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emmasim [6.3K]
3 years ago
7

The area of a circle is 121π ft². What is the circumference, in feet?

Mathematics
1 answer:
olasank [31]3 years ago
4 0

Answer:

· Area = pi*r^2. 121 = pi*r^2. Solve for r. Circumference = 2*pi*r. plug r into that equation and solve for Circumference

Use the given functions to set up and simplify f e e t . 121 π f t 2 = f e e t = f e 2 t

Step-by-step explanation:

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IrinaVladis [17]

Given:

The ratio of the cost of a shirt to the cost of a jacket is 2:5.

The jacket cost $240 more than the shirt.

To find:

The cost of the shirt and the cost of the jacket.

Solution:

Let x be the cost of the shirt.

The jacket cost $240 more than the shirt. So, the cost of Jacket is (x+240).

The ratio of the cost of a shirt to the cost of a jacket is 2:5. So,

\dfrac{x}{x+240}=\dfrac{2}{5}

5x=2(x+240)

5x=2x+480

Subtract 2x from both sides.

5x-2x=480

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Divide both sides by 3.

x=\dfrac{480}{3}

x=160

So, the cost of shirt is $160.

Now, the cost of jacket is:

160+240=400

Therefore, the cost of shirt is $160 and the cost of jacket is $400.

6 0
2 years ago
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
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Answer:

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Step-by-step explanation:

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