mae9110 mae9110
  • 01-03-2021
  • Mathematics
contestada


3x+y=-9
Y=5x+7
Solve the system of linear equations by substitution

Respuesta :

hookkick6969
hookkick6969 hookkick6969
  • 02-03-2021

Answer:

x=-2

Step-by-step explanation:

Substitute y=5x+7 into the equation 3x+y=-9

So you will have, 3x+5x+7=-9

3x+5x=8x

8x+7=-9

8x+7-7=-9-7

8x=-16

x=-2

Answer Link

Otras preguntas

2. What process is obtaining information using senses?
Which element has two valence electrons? A) calcium B) lithium C) chlorine D) neon
The temperature dropped 6°C every hour for 6 hours. What was the total number of degrees the temperature changed in the 6 hours?
Who is Mrs. Flynn and how does she react to Charlie?
Which of the following i an example of an intres groupA) the United Nations B) people for ethical treatment of animals C) the Democratic Party D) the senateand
Who steals Reverend Parris's money and leaves Salem? A. Reverend Hale B. Abigail Williams C. Elizabeth Proctor D. Mary Warren
Why is it a good idea to give examples of tough concepts within a passage? It shows readers you understand what you are writing about. It helps readers more ful
The number 4 is a solution to: 7-n 23 True False yright © 2003-2021 Acellus Corporation. All Rights Reserved.
some elements have variable valencies .give reason​
"The city of Baghdad formed two vast semi-circles on the right and left banks of the Tigris, twelve miles in diameter. The numerous suburbs, covered with parks,