Solve the problem. If necessary, round to the nearest tenth.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 11 when 
A. 1.3 sec
B. 1.1 sec
C. 1.5 sec
D. 0.3 sec
Answer: A
Mathematics
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Solve the problem.A stuntman jumps from a rooftop 290 ft off the ground. How long will it take him, falling freely, to reach the ground? (Use the formula s = 16t2.)
A. About 9.1 sec B. About 18.1 sec C. About 68.1 sec D. About 4.3 sec
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Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
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Find dy/dt.y = cos(
)
A. -sin
B. 
sin(
)
C. -sin(
)
D. - 
sin(
)
Mathematics
Find the area.
A. 225 m2 B. 112.5 m2 C. 60 m2 D. 30 m2
Mathematics