Solve the system by the substitution method. Show your work.

2y - x = 5

x^2 + y^2 - 25 = 0

If you were to randomly survey 1,000 people at a local grocery store about their use of corrective lenses, would this be a valid random sample for your study on use of corrective eyewear in the United States? Why or why not?

How to solve - 5x+y = -2

Justin's hair is 314 314 inches long. How long will it be in 2 2 months if it grows 12 12 inch each month? Which method will NOT give the correct number of inches?

Evaluate the polynomial f (x) = 2x^3-4x^2+2x-8. At x=-2

Reese is seven years younger than Emily. If the sum of their ages is 37, find the age of each girl.

Multiply. Write your anwser in simplest form. 7/12 x 3/4

Which statement are true regarding the development of trigonometry?

What is the scale factor of abc to def

A cube is numbered 1 through 6. If the cube is rolled twice, how many of the possible outcomes will have two even numbers?

56/67*34/56=reduced to smallest amount