Xanderr Xanderr

02-10-2020
Mathematics

contestada

Plz help me.
Solve the system of linear equations by substitution
X+y=-7
-5x+y=5

Respuesta :

jennyzhang096 jennyzhang096

05-10-2020

Answer:

x= -2 y= -5

Step-by-step explanation:

X+y=-7

x+-y-7

-5(-y-7)+y=5

5y+35+y=5

6y+35=5

6y=5-s5

6y=-30

y=-5

-5x+(-5)=5

-5x=5+5

-5x=10

x=-2

Answer Link

Otras preguntas

The gases in the air attracted to earth by gravity form layers called the ____

Morgan found a stone arrowhead. He measured it three times. He measured it as 2 inches to the nearest inch, to the nearest 1/2 inch, and to the nearest 1/4 inch

how is the expression of sex linked genes both similar to and different from the expression of autosomal genes?

Which is the same as 0.08? A) 80% B) 80/100 C) 8% D) 0.8

when we look at a leaf, we see the colors of light that are reflected off its surface. how does the relatively low flow of oxygen in green light?

Fragment in this sentenceWith her heavy dictonary, Donna thumps the top other ancient computer monitor. Whenever the color tint flickers from normal to sickly

a soccer team played 160 games and won 65% of them. how many did they win?

Graph the line using intercepts: 4x-3y=12

when we look at a leaf, we see the colors of light that are reflected off its surface. how does the relatively low flow of oxygen in green light?

What sorts of signals does the brain use to communicate sensations, thoughts and actions?