Find the area.
A. 779 yd2
B. 902.5 yd2
C. 1805 yd2
D. 722 yd2
Answer: B
Mathematics
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A PDF for a continuous random variable X is given. Use the PDF to find E(X).f(x) = 
A. 
B. 1
C. 
D. 
Mathematics
The number of bacteria present at a given time under certain conditions is given by the equation Q = 4,000e 0.01t, where t is expressed in minutes. How many bacteria are present at the end of 45 minutes?Please round the answers to the nearest whole.
A. Q = 6,344 bacteria B. Q = 6,273 bacteria C. Q = 6,287 bacteria D. Q = 6,298 bacteria E. Q = 6,282 bacteria
Mathematics
Factor by grouping.x3 + 8x2 - 10x - 80
A. (x + 8)(x3 - 10x) B. (x - 8)(x2 - 10) C. (x + 8)(x2 - 10) D. (x2 + 8)(x - 10)
Mathematics
Solve by completing the square.y2 + 3y - 9 = 0
A. -3 ± 3
B. 
C. 
D. 
Mathematics