Collin wants to solve this system of equations. which number can he multiply the first equation by so that when the two equations are added together, the x term is eliminated?
1/2x + 1/4y = 5
2x + 3/8y = 5
a. -4
b. -2
c. 2
d. 4

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset

What is the value of x when x + 7 = 21?