allylollopez2230 allylollopez2230

04-02-2021
Mathematics

contestada

Solve the system of linear equations by substitution. y=−3x−7 y=x+9

Respuesta :

arisgryphon arisgryphon

04-02-2021

x+9=-3x-7

add 7 to both sides

x+16=-3x

subtract 1x from both sides

16=-4x

divide both sides by -4

-4=x

y=x+9

y=-4+9

y=5

check:

5=-3(-4)-7

5=12-7

5=5

so

x=-4

y=5

Answer Link

Otras preguntas

What is the least multiple of 15 whose digits consist only of 1's and 0's?

Mutation on its own is unlikely to play an appreciable role in speciation, except when the mutation:

What’s the answer????

Find angles please please

11. This question has two parts: List some important ideas that Walk Two Moons includes. Why did you choose those ideas? Tell how using a Reading Role helpe

Keegan and Iris are learning about examining the animal's hair coat. Keegan says the hair coat should be examined for brittleness and alopecia. Iris say the hai

The blank began when a u-2 spy plane discovere soviet missile installments in cuba

Why did Roosevelt propose a second New Deal? Check all of the boxes that apply. Unemployment was still high. The first New Deal failed to regulate the bankin

Problem page a long distance runner starts at the beginning of a trail and runs at a rate of 6 miles per hour. one hour later, a cyclist starts at the beginning

Based on this article, what was Oprah’s early life like?