Solve. Round results to the nearest thousandth.x2 + 6x = -8
A. -2.000, -4.000
B. 4.000, 2.000
C. 1.123, -7.123
D. -5.000, -5.000
Answer: A
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Use the empirical probability formula to solve the exercise.Two coins are tossed 20 times and the number of tails is observed.
What is the probability that exactly one tail occurred?
A. 
B. 
C. 
D. 1
Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
The length of the critical path from B is
A. 13 hours. B. 18 hours. C. 21 hours. D. 5 hours. E. none of these
Factor by grouping.6x - 60 + xy - 10y
A. (y - 10)(x + 6) B. (x - 10)(6 + y) C. (x - 10y)(6 + y) D. (y - 10)(6x + y)
Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits.
= 55.1, ? = 219.2°; Find the horizontal and vertical components of v.
A. horizontal = -42.7, vertical = -34.8 B. horizontal = 42.7, vertical = 34.8 C. horizontal = -42.7, vertical = 34.8 D. horizontal = 42.7, vertical = -34.8