Translate using numbers and symbols.fifteen to the ninth power

A. 915
B. 15 ? 9
C.
D. 159


Answer: D

Mathematics

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Solve the problem.The sum of 81 times a number and the reciprocal of the number is positive. Find the numbers which satisfy this condition.

A. any number between -  and 
B. any number greater than 
C. any number greater than 0
D. any number between 0 and 

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Solve the problem.The sound produced by touching each button on a touch-tone phone is described by y = sin 2?lt + sin 2?htwhere l and h are the low and high frequencies (cycles per second) in the figure shown.Describe the sound emitted by touching the 0 key as a product of sines and cosines.

A. y = 2 sin(536?t) cos(2418?t) B. y = 2 sin(395?t) cos(2277?t) C. y = 2 sin(2418?t) cos(536?t) D. y = 2 sin(2277?t) cos(395?t)

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Find the center and radius of the circle.x2 + 8x + y2 = 10y

A. (4, -5); 
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C. (4, 5); 6
D. (4, 4); 3

Mathematics

Simplify the expression.-321/5

A. 32 B. -8 C. 16 D. -2

Mathematics