Solve for the requested variable.y varies inversely as x, and y = 8 when x = 
. Find y when 
A. y = 
B. y = 
C. y = 
D. y = 
Answer: C
Mathematics
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Identify the equation as either an identity or not.cos2x + cos2y = cos (x + y) cos (x - y)
A. Not an identity B. Identity
Mathematics
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.
Mathematics
Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.A number decreased by 232 is equal to 557. Find the number.
A. -789 B. -325 C. 789 D. 325
Mathematics
Simplify the expression.y-6y4
A. 
B. 
C. 
D. y10
Mathematics