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Paraphin [41]
3 years ago
13

The perimeter of a quarter circle is 7.14 feet. What is the quarter circles radius

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0

if the perimeter of 1/4 of the circle is 7.14, then the full circle is 4(7.14) = 28.56.

\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} C=28.56 \end{cases}\implies 28.56=2\pi r \\\\\\ \cfrac{28.56}{2\pi }=r\implies 4.55\approx r

and the radius is the same on any location of the circle.

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If f(x) = 3x - 1 and g(x) = x + 2, find (f + g)(x).
Alexxx [7]

Answer:

4x + 1

Step-by-step explanation:

Multiply f + g by x because f + g is in parenthesis:

f(x) + g(x)

Then implement equation #1 for f(x) into our equation:

3x - 1 + g(x)

Then implement the other equation for g(x) into our equation:

3x - 1 + x + 2

Then switch the positions of -1 and +x:

3x + x - 1 + 2

Simmplify:

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Pls consider giving my answer the Brainliest! Because it would help and mean a lot! ; )

4 0
4 years ago
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8 0
3 years ago
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RideAnS [48]

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<h3>Definition of standard deviation</h3>

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It is calculated as the square root of the given variance.

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2 years ago
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Step-by-step explanation:

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