Identify the equation as either an identity or not.cot2x = (csc x - 1)(csc x + 1)

A. Identity
B. Not an identity


Answer: A

Mathematics

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Evaluate.

A. 4 B. 2 C. 24 D. 12

Mathematics

A firm's weekly profit (in dollars) in marketing two products is given by

?   ? where  and  represent the numbers of units of each product sold weekly. Estimate the average weekly profit when  varies between 40 and 50 units and  varies between 45 and 50 units. A. $12,300 B. $11,100 C. $13,400 D. $21,760 E. $16,450

Mathematics

Solve the problem.The floor of a rectangular room is to be tiled with -foot square tiles along a 10-foot wall. How many tiles will be needed along the wall?

A. 10 tiles
B. 3 tiles
C. 31 tiles
D. 30 tiles

Mathematics

Complete the table for the equation.x + 4y = 16

A. 5; 4; 3 B. -3; -4; -5 C. 3; 4; 5 D. 0; 4; 8

Mathematics