02-11-2016
Mathematics

contestada

-x+2y=9
-7x-2y=-1
Solve each system by elimination

Respuesta :

03-11-2016

x - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me

Answer Link

Otras preguntas

"what is the speed of 70.0 miles per hour in kilometers"

Brad and Wes are building a tree house They cut a 12 foot piece of wood into 5 equally sized pieces How long is each piece of wood?

What was the significance of the national assembly in france?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 Which of the following actions creates an equivalent system such that, when combined wit

During the philadelphia convention, the new jersey plan was supported by ________ states. urban free slaveholding southern less populous

Leadership is sometimes irrelevant. a. True b. False

A photon has a wavelength of 500nm what is the energy associated

"principle a sum of money lent or invested on which interest is paid. a interest is money paid regularly at a particular rate"

To use location to build competitive advantage when competing in both domestic and foreign markets, a company must

4564345667777899999765432115×34