Find the dimension of the matrix. Tell if the matrix is a square, column, or row matrix, when applicable.
A. 2 × 4
B. 4 × 2
C. 2 × 3
D. 3 × 2
Answer: A
Mathematics
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Solve the problem.If the price charged for a bolt is p cents, then x thousand bolts will be sold in a certain hardware store, where 
. How many bolts must be sold to maximize revenue?
A. 3456 thousand bolts B. 3456 bolts C. 1728 bolts D. 1728 thousand bolts
Mathematics
Find an antiderivative of the given function.4 cos 9x
A. 
sin 9x
B. - 36 sin 9x
C. sin 9x
D. 4 sin 9x
Mathematics
Determine if the series converges absolutely, converges, or diverges.
A. converges absolutely B. converges conditionally C. diverges
Mathematics
The function f(x) changes value when x changes from x0 to x0 + dx. Find the approximation error 
. Round your answer, if appropriate.f(x) = x2 - x, x0 = 9, dx = 0.05
A. 0.005 B. 0.4525 C. 0.0025 D. 0.45
Mathematics