Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
B. 28
C. 
D. 3a
Answer: A
Mathematics
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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round to four decimal places.log2071
A. 0.7028 B. 1.4229 C. 3.1523 D. 0.5502
Mathematics
Solve the problem.Find the sum of the first 5 terms of the geometric sequence 4, 12, 36, . . . .
A. 494 B. 481 C. 484 D. 483
Mathematics
Factor by grouping.27 - 9s - 3x + sx
A. (3 - s)(9 + x) B. (3 + s)(9 - x) C. (3 + s)(9 + x) D. (3 - s)(9 - x)
Mathematics
Simplify the expression.
-1/2
A. 
B. 
C. 
D. not a real number
Mathematics