you bought some tile that cost $4.00 per square foot and some carpet that cost $2.00 per square foot. A total of 2500 ft.² was purchased for $6800. Your friend thought that you purchased 1600 ft.² of tile, and 900 ft.² of carpet. Decide if your friend is correct. If your friend is correct explain why. If your friend is not correct, explain the error for a reason

which expression represents the approximate length of bc?

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: