Evaluate the integral.
A. 117?2
B. 78?2
C. 
?2
D. 
?2
Answer: A
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Find the area of a sector of a circle having radius r and central angle ?. If necessary, express the answer to the nearest tenth.r = 7.0 ft, ? = 
radians
A. 15.4 ft2 B. 51.3 ft2 C. 102.6 ft2 D. 7.3 ft2
Write an equation for the ellipse.Foci (±6
, 0) and y-intercepts (0, ±3)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve. The weight of an object on Earth and the weight of the same object on Pluto are proportional. A person who weighs 100 pounds on Earth would weigh 3 pounds on Pluto. If a buffalo weighs 3732 pounds on Earth, find the buffalo's weight on Pluto. (Round to the nearest pound.)
A. 112 lb B. 11,196 lb C. 1,119,600 lb D. 8 lb
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 13
C. 
D. 9