Perform the indicated operation.(x + 9y)(5x + 5y)
A. 5x2 + 50xy + 50y2
B. 5x2 + 50xy + 45y2
C. x2 + 50xy + 45y2
D. x2 + 50xy + 50y2
Answer: B
Mathematics
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.
A. 13 - 4i B. -3 + 14i C. 13 + 4i D. -13 + 4i
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Evaluate.
A. 1406 B. 1,771,560 C. 163,011,640 D. 50,616
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Solve the problem.An object is propelled vertically upward from the top of a 288-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. After how many seconds does the object reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 2 sec B. 7 sec C. 15.2 sec D. 1.2 sec
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Find the product. Assume all variables have non-negative values.(
+ 
)(
- 
)
A. -4
B. 2 - 2
C. 8
D. 2 - 4
Mathematics