rooksmichelle3 rooksmichelle3

13-02-2020
Mathematics

contestada

Solve each system of linear equations by elimination. 5x-y=7 4x+8y=-12

Respuesta :

ghanami ghanami

14-02-2020

Answer:

Step-by-step explanation:

hello :

5x-y=7....(*)

4x+8y=-12...(**)

multiply (*) by 8 : 40x-8y =56 ...(***)

add(**) and (***) : 44x = 44 so : x = 1

put this value in (*) : 5(1)-y = 7

y = 5-7 = -2

Answer Link

Otras preguntas

-5r - 3r = ? pls help!!!

(y+3) solve by using the distributive property

a. An object moves 100 m in 5 sec, calculate its speed.

A piece of wood displaces 12.5 mL of water and has a density of 0.97 g/ml. what is the mass of the piece of wood? what will happen if the wood is placed in wate

this is confusing ok so 1.if there r 2 boys in a class for every 3 girls what would be the ratio for it and 2.if Seth bought a 12-ounce jar of something that is

f(×)=3×2 - 2 and g(×) = 2×+4 , find (f-g)(×)

303 million, 90 thousand write it in digits

Hey can someone tell me what is ‘Advanced Fitness’ in high school? What you do in that class?

how do you know that "the path to paper son" and "Louie share kim, paper son" are informtional texs? Give there examples.

Which website allows you to host your podcast for at a cost that includes your domain name? (Correct answer only) A. Podbean B. Blogger C. WordPress D. HostGato