Use sum-to-product formulas to rewrite the expression as a product.cos 7? - cos 3?
A. -2 cos 5x sin 2x
B. 2 cos 5x cos 2x
C. -2 sin 5x sin 2x
D. 2 cos 2x
Answer: C
Mathematics
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Find the indicated sum.8, 16, 32, 64, 128, . . . ; S13
A. 65,528 B. 65,530 C. 65,508 D. 65,565
Mathematics
Write the following in simplest form using positive exponents.512 ÷ 53
A. 54 B. 536 C. 59 D. 515
Mathematics
Write the fraction as an equivalent fraction with the indicated denominator.
= 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
? 
A. 
B. 
C. 
D. 
Mathematics