Solve the problem.A long strip of sheet metal 12 inches wide is to be made into a small trough by turning up two sides at right angles to the base. If the trough is to have maximum capacity, how many inches should be turned up on each side?
A. 4 in. on one side, 5 in. on the other
B. 4 in.
C. 3 in.
D. 6 in.
Answer: C
Mathematics
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A. 20m4z6 B. 20m4z C. 20mz4 D. 20mz6
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Find an equation of variation for the given situation.y varies jointly as x and z, and y = 111.51 when x = 5.9 and z = 9
A. y = 5.1xz
B. y = 
C. y = 2.1xz
D. y = 0.21xz
Mathematics
Write as a percent. Round to the nearest hundredth of a percent when necessary.
A. 35.5% B. 71% C. 1000% D. 7.1%
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."The quotient of 10 and a number, added to -21
A. 
B. -21 + 
C. 10 + x + (-21)
D. -21 + 
Mathematics