Rewrite as a single logarithm using the product rule for logarithms. Assume all variables represent positive real numbers.log5x + log5y
A. log5(x + y)
B. log10(x + y)
C. log5(xy)
D. log10(xy)
Answer: C
Mathematics
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 3 and x = 7 using a lower sum with four rectangles of equal width.
A. 105 B. 126 C. 117 D. 86
Mathematics
Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(15, 20); Find cos ?.
A. 
B. 
C. 
D. 
Mathematics
Write as a percent.0.9
A. 0.9% B. 900% C. 0.09% D. 90%
Mathematics
Simplify.(4y4/5)15
A. 415y12 B. 4y4/75 C. 415y79/3 D. 4y4/3
Mathematics