Find the circumference. Leave your answer in terms of pi.A semicircle with diameter 25 mi

A. 25? mi
B. 6.25? mi
C. 50?
D. 12.5? mi


Answer: D

Mathematics

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Solve the inequality.For the function f(x) = x2 - 3x + 2, solve f(x) > 0.

A. (2, ?) B. (1, 2) C. (-?, 1) D. (-?, 1) ? (2, ?)

Mathematics

Factor completely. If the polynomial cannot be factored, write "prime."yz3 + 216y

A. y(z + 6)(z2 - 6z + 36) B. y(z + 6)(z2  + 36) C. (yz + 6)(z2 - 6z + 36y) D. y(z - 6)(z2 + 6z + 36)

Mathematics

Solve the problem.A company training program determines that, on average, a new employee can do P(s) pieces of work per day after s days of on-the-job training, where  Find  P(s).

A. 140 B. 20 C. Does not exist D. 23

Mathematics

Solve the following problem in which a radical must be evaluated.  The maximum distance d in kilometers that you can see from a height h in meters is given by the formula  How far can you see from the top of a  building? Find an approximation to the nearest tenth if necessary.

A. 716.5 km B. 19.6 km C. 68.5 km D. 36.6 km 

Mathematics