Solve the problem using a known formula.A contestant in a 20-mile race finished in 5 hours. What was her average rate during the race? (Round to the nearest tenth, if necessary.)
A. 15 mph
B. 100 mph
C. 4.0 mph
D. 0.3 mph
Answer: C
Mathematics
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Find the average value of the function f over the given region.f(x, y) = 3x + 2y; R = {(x, y): 0 ? x ? 1, 0 ? y ? 1}
A. 4
B. 
C. 
D. 5
Mathematics
Graph the function.y = csc 
A. 
B. 
C. 
D. 
Mathematics
Solve using matrices. x + y = 8
A. (8, 6, -18) B. (2, 6, -6) C. (14, 6, 6) D. (2, -6, -6)
Mathematics
Find the expression that is equivalent to the given rational expression.- 
A. 
B. 
C. 
D. 
Mathematics