Find the trigonometric function value of angle ?.cos ? = 
and ? in quadrant IVFind sin ?.
A. - 
B. - 
C. - 
D. - 
Answer: C
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Find the equation for the level surface of the function through the given point.f(x, y, z) = 
+ 
, (5, e6, e-4)
A. -5e-4 - 5e6 + 4e5 + 1 = 
+ 
B. -4e-4 - 6e6 + 4e5 + 1 = ln ? + 1 + t et
C. -4e-4 - 6e6 + 4e5 - 9 = 
+ 
D. -4e-4 - 6e6 + 4e5 + 1 = 
+ 
Solve the problem.The time it takes to complete a certain job varies inversely as the number of people working on that job. If it takes 28 hours for 7 carpenters to frame a house, then how long will it take 42 carpenters to do the same job?
A. 4.7 hr B. 40 hr C. 42 hr D. 10.5 hr
Let L be the language defined by the regular expression 0(0 | 1)?1(0 | 1)?.
(a) Write 3 strings that belong to L (b) Use words to describe L.
Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.7-1 - 3-1
A. - 
B. - 
C. - 
D. 