akybrown akybrown
  • 23-08-2017
  • Mathematics
contestada

Use substitution to solve the system.

y =2x - 4
5x+2y =1

x=
y=

Respuesta :

choixongdong
choixongdong choixongdong
  • 23-08-2017
y =2x - 4
5x+2y =1

substitute y =2x - 4 into 5x+2y =1
5x+2y =1
5x+2(2x - 4) =1
5x + 4x - 8 = 1
9x = 9
x = 1
y =2x - 4 = 2(1) - 4 = -2

answer
x = 1 and y = -2
Answer Link

Otras preguntas

Look at the map below. The countries that colonized the Americas during the 15th through 18th centuries came mostly from which region. A) Region D B) Region A C
25-28 please help i’m having a lot of trouble
What is the Formula for iron metal.
Use the space below to describe the steps you used to change your desktop background. Desktop background:
20 POINTS PLEASE HELP!!! WHAT IS THE AREA OF THE PARALLELOGRAM?
multiply: 3m^3(2m^ + 3m - 1)
The square of a number is 12 less than 7 times the number. What is the number?
G verify that the mean value theorem applies to f(x)= x+2/x on the interval [1,2] find point c satisfying conclusion
someone help me figure this out
Brainaly which of these were the characteristics of the aztec empire? implementation of tribute system practice of human sacrifice development of irrigation me