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Alik [6]
2 years ago
13

The length of the radius of a bicycle wheel is 14 inches. Which of the following is closest to the circumference of the wheel? A

. 44 in. A. , , 44 inches ., , B. 615 in. B. , , 615 inches ., , C. 88 in. C. , , 88 inches ., D. 154 in.
Mathematics
1 answer:
tatuchka [14]2 years ago
6 0

Answer:

C. 88 in.

Step-by-step explanation:

This is because the equation for the circumference of a circle is pi times diameter. To get the diameter, multiply the radius by 2. Then do 28*3.14 to get the circumference of the circle then round your answer to get the nearest whole number which is 88 in.

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Answer:

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6 0
3 years ago
5c squared- d squared+3/2c - 4d...c= -1. d= -4​
riadik2000 [5.3K]

For this case we have the following expression:

5c ^ 2-d ^ 2 + \frac {3} {2} c-4d

We must find the value of the expression when:

c = -1\\d = -4

Substituting we have:

5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}

Finally, the value of the expression is:

\frac {7} {2}

ANswer:

\frac {7} {2}

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