Simplify the expression. Assume that variables represent nonzero numbers.(x5)2(x4)
A. x14
B. x40
C. x9
D. x11
Answer: A
Mathematics
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For the number listed, find its opposite.-2.1
A. 
B. -2.1
C. 
D. 2.1
Mathematics
Provide an appropriate response.Suppose that 4 items are to be selected from N items and that repetitions are not allowed. Which of the following is true?
A. There are 4 times as many permutations as combinations. B. There are 24 times as many permutations as combinations. C. There are 24 times as many combinations as permutations. D. There are 4 times as many combinations as permutations.
Mathematics
Use an identity to write the expression as a single trigonometric function or as a single number.
A. tan 26° B. sin 26° C. cot 26° D. cos 26°
Mathematics
Find another name for the given number, but with the denominator indicated. Use multiplying by 1.
= 
A. 
B. 
C. 
D. 
Mathematics