Substitute the given values into the formula and then evaluate to find the unknown quantity. Label units in your answer. If the answer is not exact, round your answer to the nearest hundredth.S = 0.5h - 23.5 ; h = 72
A. 27
B. 14
C. 60
D. 13
Answer: D
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Mathematics
Find the derivative.y = 9 - 5x3
A. 9 - 15x2 B. -10x2 C. -15x D. -15x2
Mathematics
Solve. Round your answer to three decimal places if necessary.4x = 
A. 
B. 3
C. -3
D. 
Mathematics
Find the indicated matrix.Let A = 
. Find 3A.
A. 
B. 
C. 
D. 
Mathematics