Calculate.81 ÷ 9 ? 9 ÷ 3 ? 2187

A.
B.
C. 59,049
D. 729

Answer: C

Mathematics

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Write the expression as a pure imaginary number.

A. i
B. -50i 
C. ±50 
D. 50i 

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Find the inverse using composition.f(x) =  - 5

A. f-1(x) = 3x + 5 B. f-1(x) = x + 8 C. f-1(x) = 3x + 15 D. f-1(x) = 3x - 15

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Mathematics

Factor the trinomial.x2 - x - 90

A. (x + 1)(x - 19) B. (x + 10)(x - 9) C. (x + 9)(x - 10) D. (x - 10)(x + 10)

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Mathematics

Solve the equation.- = -

A. - , 
B. No solution
C.
D.

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Mathematics