Find the partial derivative.For 
find 
A. 24
B. 12
C. -12
D. 36
Answer: D
Mathematics
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Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 126 seconds are required to make a 3-by-7 enlargement, find the time required for a 
enlargement.
A. 280 sec B. 200 sec C. 320 sec D. 240 sec
Mathematics
Perform the indicated operations.? = 
(angular acceleration)
A.
? =  |
B.
? =  |
C.
? =  |
D.
? =  |
Mathematics
Solve the system of equations.x - y + 5z = -16-5x + 5y - 25z = -4x + 3y + z = 8
A. {(-4, 0, 4)} B. {(-4, 4, 0)} C. {(0, 4, -4)} D. ?
Mathematics
Evaluate without using a calculator.
?
What will be an ideal response?
Mathematics