lovelyfordayzp67wo2 lovelyfordayzp67wo2

04-04-2018
Mathematics

contestada

what is the solution of the system? use substitution. 5x - y =3 6x - y=8

A. 1, -8
B. 5,22
C. 11,-2
D.5/6, 3/8

Respuesta :

Аноним Аноним

04-04-2018

5x - y = 3 ------------ (1)
6x - y = 8 ------------ (2)

From (1):
5x - y = 3
y = 5x - 3 ------------ Sub into (2)

6x - (5x - 3) = 8
6x - 5x + 3 = 8
x + 3 = 8
x = 5 ------------------- Sub into (1)

5x - y = 3
5(5) - y = 3
25 - y = 3
y = 25 - 3
y = 22

---------------------------------
Ans: x = 5, y = 22
---------------------------------

Answer Link

Otras preguntas

Marika and Freddy sold 70 homes for Ron Realty. If Marika sold 2.5 times as many homes as Freddy, how many homes did each sell?

Can someone use the word delta in a sentence

Data are drawn from a symmetric and bell shaped distribution with a mean of 120 and a standard deviation of 5. There are 900 observations in the data set. What

Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.

Scarcity is the condition of not having enough goods and services to satisfy everyone's?

How is it possible for Mercury to have frozen ice ?

Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??

Marika and Freddy sold 70 homes for Ron Realty. If Marika sold 2.5 times as many homes as Freddy, how many homes did each sell?

How were life forms affected by the rise in atmospheric oxygen levels that began 2.2 billion years ago?

Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.