Write an equation to describe the variation. Use k for the constant of proportionality.x varies directly as y and inversely as z.
A. x = 
B. x + y - z = k
C. xyz = k
D. x = 
Answer: A
Mathematics
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Find the Cartesian product.A = {8, 4, 11}B = {14, 15}Find A × B.
A. {(8, 14), (4, 15)} B. {(8, 14), (8, 15), (4, 14), (4, 15), (11, 14), (11, 15)} C. {(8, 14), (4, 11), (11, 14)} D. {(14, 8), (14, 4), (14, 11), (15, 8), (15, 4), (15, 11)}
Mathematics
Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.b = 
, c = 8; find csc A.
A. 
B. 
C. 
D. 
Mathematics
Perform the matrix row operation (or operations) and write the new matrix.
A. 
B. 
C. 
D. 
Mathematics
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics