Factor completely.-x2 - 6x + 72
A. -(x - 12)(x + 6)
B. -(x - 12)(x + 1)
C. -(x - 12)(x - 6)
D. -(x + 12)(x - 6)
Answer: D
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = sin 5yi + cos 9xj; C is the rectangle with vertices at (0, 0), 
, 
, and 
A. - 
?
B. 
?
C. 0
D. - 
?
Simplify.
A. 7x
B. 
C. 
D. 7
Using synthetic division, determine whether the numbers are zeros of the polynomial.-1, 0; f(x) = 6x3 + x2 + 5x + 8
A. No; no B. Yes; no C. Yes; yes D. No; yes
In a certain distribution, the mean is 50 with a standard deviation of 6. Use Chebyshev's theorem to tell the probability that a number lies in the following interval. Round your results to the nearest whole percent.Between 20 and 80
A. At least 99% B. At least 96% C. At least 98% D. At least 94%