paige25 paige25

12-04-2016
Mathematics

contestada

-7x+7y=-21 and 4x-2y=22 solve each system by substitution

Respuesta :

benjaminhe benjaminhe

12-04-2016

4x - 2y = 22
2y = 4x - 22
y = 2x - 11

-7x + 7(2x - 11) = -21
-7x + 14x - 77 = -21
7x = 56
x= 8

4(8) - 2y = 22
32 - 2y = 22
10 = 2y
y = 5

Answer Link

Otras preguntas

Find the compound ratios of 6:5 and 1 : 4

19. A square has an area of 448 square meters. 20 What is the length of each side of the square? 49

Who is in charge of upholding the supremacy clause of the United States Constitution? A. individual state courts B. individual state governments C. the presiden

(3n+2) (n-4 )when n =5 2n

Math Trigonometry, please show step by step

Multiple Select Question Select all that apply What are the benefits of a large sample size? Select all that apply. I lt controls for chance events. It enables

Evaluate the expression for p = -1 -38p2 - 78p

Is homeland a proper noun if lowercase?

In the right-angled triangle abc,ac is the hypotenuse with length 8cm, and ab=6 cm. Work out the length of bc, giving your answer as a simplified surd.

which term is equal to -332?