Express the following using negative exponents.
A. 5-x+1
B. x5
C. 5-x
D. x-5
Answer: D
Mathematics
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Solve.20 is what percent of 10?
A. 20% B. 2% C. 50% D. 200%
Mathematics
Find the domain and range of the function.y = 
A. D = (-?, ?), R = [0, ?) B. D = [1, ?), R = (-?, ?) C. D = [1, ?), R = [0, ?) D. D = (-?, ?), R = (-?, ?)
Mathematics
Combine the following, if possible.8
+ 7
+ 11
+ 26
A. 52
B. 26
C. 65
D. 26
+ 26
Mathematics
Express the product as a sum or difference.cos 6x cos 5x
A. 
(cos x + cos 11x)
B. cos2 30x2
C. 
(cos 11x - sin x)
D. 
(cos 11x - cos x)
Mathematics