Translate the equation into a sentence by using the phrase "varies directly" or "varies inversely". x = kb2
A. x varies directly as the square root of b.
B. x varies inversely as the square of b.
C. x varies inversely as the square root of b.
D. x varies directly as the square of b.
Answer: D
Mathematics
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Solve the problem.Water is falling on a surface, wetting a circular area that is expanding at a rate of 
How fast is the radius of the wetted area expanding when the radius is 
(Round your answer to four decimal places.)
A. 91.4552 mm/s B. 0.0687 mm/s C. 0.0109 mm/s D. 0.0219 mm/s
Mathematics
Solve for x, where x is a real number.3?x = 243
A. 5
B. 
C. ?5
D. ?6
Mathematics
Multiply.-6x2(-11x4 + 10x2)
A. 66x6 - 60x4 B. 6x6 + 6x4 C. 6x2 D. 66x6 + 10x2
Mathematics
Simplify. Assume that all variables represent non-negative real numbers.
A. -2a2b
B. 2
C. 2ab
D. 2ab
Mathematics