Rationalize the denominator. Assume that all variables represent nonnegative numbers and that the denominator is not zero.
A. 
B. -1
C. 
D. 
Answer: D
Mathematics
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Use a calculator to evaluate the expression. (Round your answer to three decimal places.)
A. 4.176 × 108 B. 4.176 × 109 C. 7.802 × 107 D. 7.802 × 109 E. 7.802 × 108
Mathematics
One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval.cos x = - 
,
x in 
A. sin x = - 
, tan x = 2
B. sin x = 
, tan x = -2
C. sin x = 
, tan x = 2
D. sin x = - 
, tan x = -2
Mathematics
Find the least common multiple of the given number by the method of intersection of sets of multiples.84 and 126
A. 504 B. 252 C. 42 D. 756
Mathematics
Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.e-x = 731
A. x = -log 731 B. x = ln -731 C. x = ln 731 D. x = -ln 731
Mathematics