-5x – 16 = 9x + x – 1 -5x – 16 = 8x – 1

-16 = 13x – 1

-15 = 13x

x = -

15

13

The mistake was

The correct answer is x =

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).