Find the average value of 
over the given region.
+ z2 over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Ignoring friction, the time , t (in seconds), required for a block to slide down an inclined plane is given by the formula 
where b is the length of the base in feet and 
per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with a base of 12 feet at an angle of 
Round your answer to three decimal places.
A. 0.354 sec B. 6.962 sec C. 0.868 sec D. 1.227 sec
Solve and check your answer.-4x = 8
A. x = -12 B. x = -2 C. x = 12 D. x = 1
A wiring job requires pieces of BX cable cut to the following lengths:
pieces, 
feet in length
pieces, 
feet in length
pieces, 
feet in length
pieces, 
feet in length
pieces, 
feet in lengthHow many feet of cable is needed to complete the job?
A. 
feet
B. 
feet
C. 
feet
D. 
feet
E. 
feet
Find a so that the statement is true.
A. 5 B. 7 C. 0 D. 3 E. 6