Solve the equation. Find all real solutions.x4 = 10x2 + 11
A. ±2, ± 
B. ± 
C. -1, -11
D. 1, 11
Answer: B
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Consider the following timeline using three processors.
A. This timeline is an illegal schedule because task E was started before task C was completed. B. This timeline is an optimal schedule for three processors. C. This timeline is an illegal schedule because task F was started before task E was completed. D. This timeline is not an optimal schedule because the project can be scheduled with a finishing time of 11 hours. E. none of these
Simplify the expression. All exponents should be positive integers.(x5)-9
A. 
B. - x45
C. -9x45
D. -9x5
Write an equation that models the conditions, then to solve the equation.What number is 30% of 24?
A. 720 B. 72 C. 0.72 D. 7.2
Solve 
by completing the square, if possible.
A. 
B. 
C. 
D. 
E. no solutions