Simplify the square root., b ? 0

A. b
B. -b
C. b²
D.

Answer: A

Mathematics

Find an antiderivative of the given function.4 cos 9x

A. sin 9x
B. - 36 sin 9x
C. sin 9x
D. 4 sin 9x

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Mathematics

Determine whether the given number is approximate or exact.The blackboard in the mathematics classroom is 81 inches long.

A. Exact B. Approximate

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Mathematics

Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log19

A. log₁₉5 - 2 log₁₉y - 2 log₁₉x
B. 6 log₁₉5 - 2 log₁₉y - log₁₉6
C. log₁₉5 - log₁₉y - log₁₉x
D. log₁₉5 - 2 log₁₉y - log₁₉x

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Mathematics

Determine the constant of variation for the stated condition.b varies directly as a, and b = 72 when a = 8.

A. k = 64
B. k = 11
C. k =
D. k = 9

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Mathematics