Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 11
- 22
B. 11
- 2
C. 
D. 11
+ 22
Mathematics
Determine whether the functions f(x) and g(x) are inverse functions.f(x) = x - 6, g(x) = x + 6
A. No B. Yes
Mathematics
Factor by grouping to obtain the difference of two squares.x4 - x2 - 18x - 81
A. (x2 + x + 9)(x2 - x - 9) B. (x2 + x - 9)(x2 - x - 9) C. (x2 + x + 9)(x2 - x + 9) D. (x2 + x - 9)(x2 - x + 9)
Mathematics
Solve the problem.y varies directly as the square of z and y = 384 when z = 8. Find y when z is 9.
A. 486 B. 432 C. 48 D. 72
Mathematics