Which number is smaller than ?
A.
?
B.
?
C.
?
D.
?
E.
?
Answer: D
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Find the area of the shaded region. Round results to the nearest unit.
A. 28 m2 B. 14 m2 C. 7 m2 D. Not enough information given
Solve the problem.The relation between escape velocity, ve, and orbital velocity, vc, is described by the equation 
. If a spacecraft requires a velocity of 82,500 miles per hour in order to escape the gravitational pull of Planet A, what velocity is needed to travel in a circular orbit around Planet A? Round to the nearest hundredth.
A. 116,672.62 miles per hour B. 82,498.59 miles per hour C. 58,336.31 miles per hour D. 406.2 miles per hour
Solve the equation.
- 
= 
A. 10 B. -10 C. 15 D. No solutions
The shape of the window shown in below is a combination of a rectangle and a semicircle. Find the equation of the circle of which the semicircle is a part.
?
?
; 
?
A. ?
B. ?
C. 
D. ?
E. none of these