Determine whether the following numbers can represent the side lengths of a right triangle: 9, 40, 42

How do I simplify (tanx/1+secx) + (1+secx/tanx)

40 is 20% of x. If x is 80% of y, then what is the sum of x and y?

Steve wants to develop a way to find the total cost of any item including sales tax. The sales tax in his city is 6%. His friend Jenna writes the expression x + 6x where x is the cost of the item.

What is the percent of change in the cost of a pizza

Two step equations 2/3x-7=11

Mr. Sam took 1 h 15 minute drive from his home to his office. if the distance between his home and office was 50 miles, at what average speed did Mr. Sam drive?

Add (-3.5x + 1.7) + (9.1x - 0.3) =

All equivalent expressions 7x-6x+9x 10 x 10+x 9x-x X+9x

For a 30 sided polygon, what is the degree of rotation?

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