An equation and the first step in its solution are shown: Equation: x2 + 8x - 9 = 0 Step 1: x2 + 8x + = 9+
What number should be put in the to solve the equation by the method of completing the square?
A. 16
B. 12
C. 8
D. 4​

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? 0.62 0.78 0.84 0.96