Solve the problem.A contractor finds that it takes Sam Tockett 9 hours to construct a wall of a certain size. It takes Jim Lowell 7 hours to construct the same wall. How long would it take if they worked together?
A. 3
hours
B. 
of an hour
C. 1 hour
D. 16 hours
Answer: A
Mathematics
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Find dy.y = csc(4x2 - 1)
A. -8x csc(8x) cot(8x) dx B. -8x csc(4x2 - 1) cot(4x2 - 1) dx C. 8x csc(4x2 - 1) cot(4x2 - 1)dx D. -4x2 csc(4x2 - 1) cot(4x2 - 1) dx
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Find the function value.Find f(a - 3) when f(x) = x2 + 2.
A. a2 - 6a + 11 B. a2 + 9 C. a2 - 1 D. a2 - 6a + 9
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Provide an appropriate response.
= 
.
A. 3m - n B. 3n - m C. 3m - 3n D. 3m/n
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