Find the circumference of the circle. Then use the approximation 3.14 for ? and approximate the circumference.
A. 30.144 yd
B. 29.184 yd
C. 58.368 yd
D. 60.288 yd
Answer: D
Mathematics
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Find the average velocity of an object which follows the position function s(t) over the given interval.s(t) = t2 + 2t, [2, 7]
A. 9
B. 
C. 11
D. 
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire of constant density that lies along the first-quadrant portion of the circle 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 0, 
= 
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Perform the indicated operation or operations.
A. - 
B. 
C. - 
D. - 
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Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 
= 90.0
B. 
? 6.928
C. 180
D. 
? 13.416
Mathematics