Find the angle between the given vectors. Round to the nearest tenth of a degree, if necessary.w = -i + 2j, r = 3i - 3j
A. 82.9°
B. 0.5°
C. 71.6°
D. 161.6°
Answer: D
Mathematics
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Express as a single logarithm and, if possible, simplify.5logb t - logb s
A. logb 
B. logb t5 ÷ logb s
C. logb 
D. logb (t5 - s)
Mathematics
Graph the solution of the system. 2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Mathematics
Divide, if possible.
A. -26
B. - 
C. -16
D. 16
Mathematics
For the given functions f and g, find the requested composite function value.f(x) = 2x + 6, g(x) = 4x2 + 1;
Find (g ? f)(1).
A. 22 B. 16 C. 257 D. 101
Mathematics