kaylagray2588
kaylagray2588 kaylagray2588
  • 03-05-2022
  • Mathematics
contestada

{4x+y=9 and 5x +2y=9
use substitution method to find all solutions of the system of equations

(X,y)=

Respuesta :

okikiolu3
okikiolu3 okikiolu3
  • 04-05-2022

Answer:

x=3,y=-3

Step-by-step explanation:

Isolate x for 4x +y=9: x=9-y/4

Substitute x = 9-y/4

[5 x 9-y/4+2y =9]

Isolate y for (45+3y/4)=9:

y=-3

For x= 9-y/4

Substitute y = -3

x= 9-(-3)/4

9-(-3)/4=3

X=3

The solutions to the system of equations are:

x=3 y= -3

Answer Link

Otras preguntas

7. Shawna earns $12.75 per hour. How many hours does she need to work to earn $102 or more? at least / at most / less than / more than - _ hours
At the city museum, child admission is $5.10 and adult admission is $9.70 . On Monday, twice as many adult tickets as child tickets were sold, for a total sales
Which two of the following statements best identify the central ideas of this text
1. The carbon in fossil fuels was in the atmosphere long ago. Why does burning these fuels and releasing the carbon back into the atmosphere create a problem to
How many boards, each 3/4 yd long, can be cut from a piece of wood that is 6 yards long? Will there be any wood left over?
6(-w+5)=42 some help me on need help ​
true or false approximately 0.2 percent of all water on earth in groundwater?
At the city museum, child admission is $5.10 and adult admission is $9.70 . On Monday, twice as many adult tickets as child tickets were sold, for a total sales
Find the equation of the line that contains the point (3, 2) and is parallel to the line 3x+y=-3.
Explain how to create an equation with infinitely many solutions . I NEED HELP ASAP !!