Solve the problem.Use of the internet for shopping is increasing dramatically, but still is somewhat age dependent. When a popular web site that sells books asked the age of users who bought products from them over the internet, they obtained the following data. What is the probability that a buyer on this web site is aged 
A. 4.32%
B. 2.67%
C. 4.26%
D. 2.74%
Answer: B
Mathematics
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Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = sin u, u = cos x
A. sin(cos x) sin x B. - cos x sin x C. cos x sin x D. - cos(cos x) sin x
Mathematics
Solve.A square plywood platform has a perimeter which is 9 times the length of a side, decreased by 15. Find the length of a side.
A. 1 B. 5 C. 8 D. 3
Mathematics
Use <, >, or = to make a true statement.36 ? 42
A. > B. = C. <
Mathematics
Use the vectors in the figure below to graph the following vector. 
2u - z - w 
A. 
B. 
C. 
D. 
Mathematics