Use a proportion to solve the problem.Coffee beans from 14 trees are required to produce the 17 lb of coffee that the average person in the United States drinks each year. About how many trees are required to produce 492 lb of coffee? Round to the nearest whole number.
A. 597 trees
B. 405 trees
C. 393 trees
D. 450 trees
Answer: B
Mathematics
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Perform the necessary operations.4 + 7 - 12
A. 9 B. -15 C. 23 D. -1
Mathematics
If y' = k, where k is a non-zero constant, then y =
a. (k^2)/2 + C b. (k^2)x/2 + C c. kx + C d. kx^2 + C
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 6y2 = 7x2 - y2 = 1
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. no real solution
Mathematics
If possible, completely factor the expression.
?
?
A. 
B. 
C. 
D. 
E. not factorable
Mathematics