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balandron [24]
3 years ago
13

A circular swimming pool is 21 feet in diameter. What is the circumference of the swimming pool?

Mathematics
1 answer:
Natasha2012 [34]3 years ago
5 0
Circumference= 2 x pi x r
C= 2 x pi x (21/2)
C=21 x pi
C=65.97 ft

Hope this helps :)
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Solve the equation for the unknown variable.
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Answer:

   b x 3 = 8

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3 years ago
Irving can I remember the correct order of the five digits on his ID number he does remember that the ID number contains the dig
Cloud [144]

Answer: \frac{27}{125}

Step-by-step explanation:

Here the total numbers are 1,  4,  3,  7,  6

Since the total number of possible arrangement = 5\times 5 \times5 \times 5 \times 5=5^5

The total number of the odd numbers in the given numbers = 3

Thus the possible arrangement that the first three digits will be odd numbers = 3\times 3\times 3\times 5\times 5=3^3\times 5^2

Thus, the probability that the first three digits of Irvings ID number will be odd numbers = the possible arrangement that the first three digits will be odd numbers / total possible arrangement =  \frac{3^3\times 5^2}{5^5} = \frac{3^2}{5^{5-2}}

= \frac{3^3}{5^3} = \frac{27}{125}

5 0
3 years ago
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s344n2d4d5 [400]

Answer:

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7 0
2 years ago
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Which is a measure of the efficiency of an investment?
DiKsa [7]

Answer:

The correct answer is option B. Return on Investment.

Step-by-step explanation:

The return on investment is used when we want to measure the capacity of an investment, or compare it among several other investments.

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To calculate the return on investment there is a formula which will give us a percentage:

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7 0
3 years ago
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Ede4ka [16]

Answer:

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Step-by-step explanation:

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B. If you have trouble with sums, your calculator can help.

  -22 + (-44) = -22 -44 = -66

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C. -36/x = -9 can be solved by multiplying by x and dividing by -9:

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D. The absolute value function changes the sign of negative numbers to positive:

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E. If you have trouble with sums, your calculator can help.

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2 years ago
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