Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(9x
- 
)(
- 
)
A. 9x2 - 9x + 10
B. 9x2 + 10
C. 9x2 - 8x
+ 10
D. 9x2 - 9x
- 
+ 10
Answer: D
Mathematics
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Find the percent using a proportion. Round your answer to the nearest tenth if necessary.3.6 inches is what percent of 20 inches?
A. 5.6% B. 555.6% C. 18% D. 0.2%
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Find the value of the determinant.
A. -163 B. 39 C. -133 D. 133
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Express as a single logarithm.logcq + logcr
A. logcq ? logcr
B. logc(qr)
C. logc
D. logcqr
Mathematics
Using calculus, it can be shown that if a ball is thrown upward with an initial velocity of 16 ft/s from the top of a building 256 ft high, then its height h above the ground t seconds later will be h = 256+16t-16t². During what time interval will the ball be at least 64 ft above the ground.
What will be an ideal response?
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