Multiply and simplify. Assume that all variables in a radicand represent positive real numbers.
? 
A. 3x9y3
B. 3x9y3
C. 3x8y3
D. 3x9y3
Answer: B
Mathematics
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Let x represent the unknown, and write an equation for the sentence. Do not solve. Four times a number added to 7 times the number equals 33.
A. 4(x + 7) = 33x B. 4x(7 + x) = 33 C. 4x + 7x = 33 D. 4x - 7x = 33
Mathematics
Find the infinite sum accurate to three decimal places.
A. 0.800 B. 0.143 C. -0.571 D. 0.200
Mathematics
Find the indicated probability.Among the contestants in a competition are 45 women and 26 men. If 5 winners are randomly selected, what is the probability that they are all men?
A. 0.00505 B. 0.05384 C. 0.06439 D. 0.10228
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = -8x
C. f-1(x) = 
D. f-1(x) = 8x
Mathematics