Set up, but do not evaluate, an integral for the area of the surface obtained by rotating the curve about the given axis.
Mathematics
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Solve the problem. Round to the nearest whole unit.The top and base of a window are respectively 11 ft and 3 ft above the level of an observer's eyes. At what distance from the wall must the observer stand in order to make the angle subtended by the window equal to the angle of elevation of its base?
A. 6 ft B. 8 ft C. 10 ft D. 4 ft
Mathematics
Solve the problem.The price of a printer was reduced from 
to $220. What was the percent of the decrease?
A. 50% B. 45% C. 81.8% D. 55%
Mathematics
For the algebraic expression, tell whether the portion named is a term or a factor.4a(a - b) (a - b) is a ________
A. term B. factor
Mathematics
Simplify.
A. 1
B. 
C. 
D. 
Mathematics