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aksik [14]
1 year ago
7

Calculate the circumference. round to the nearest hundredth. 16 inches

Mathematics
1 answer:
goldenfox [79]1 year ago
6 0

Given the radius is, r = 16 in,

The expression for the circumference of a circle is,

C=2\pi r

Therefore, we have,

C=2\times3.14\times16\text{ in = }100.48\text{ in}

Thus, the circumference of the circle is 100.48 in.

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The sum of half of a number and 8 less<br> than the number is 25. Find the number.
LuckyWell [14K]

Answer:

The number is 22

Step-by-step explanation:

let x = the number

\frac{1}{2} x  + x - 8 = 25 \\  \frac{1}{2} x + x  - 8 + 8 = 25 + 8 \\  \frac{1}{2} x + x = 33 \\ factor   \: out\: x \: on \: the \: left \\ x( \frac{1}{2}  + 1) = 33 \\ divide \: both \: sides \: by \:  \frac{1}{2}   + 1 \\  \frac{x( \frac{1}{2} + 1) }{ \frac{1}{2}  + 1}  =  \frac{33}{ \frac{1}{2}  + 1}  \\ x =  \frac{33}{ \frac{3}{2} }  \\ x =  \frac{66}{3}  \\ x = 22

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3 years ago
A triangle has sides of lengths 9,7, and 12. Is it a right triangle? Explain.
dusya [7]
Answer: No, it is not a right triangle.

Explanation:
9^2 + 7^2 (?) 12^2

81 + 49 (?) 144

130 = 144

Since 12^2 = 144, and the square root of 130 is 11.4^2, it is not a right triangle.
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