maryamshahram129 maryamshahram129

16-06-2021
Mathematics

contestada

What is the solution to the system of equations?
Solve using the substitution method.
-5x – y=6
-8x + y = 20
A) (-2,4)
B) (1, -2)
D) (2, 1)
C) (1,2)

Respuesta :

SunshineSenpai SunshineSenpai

17-06-2021

Answer:

-8x+y=20

y=20+8x

-5x-y=6

-5x-(20+8x)=6

-5x-20-8x=6

-13x=6+20

-13x=26

-13x÷ -13=26÷ -13

x= -2

-8x+y=20

-8×(-2)+y=20

16+y=20

y=20-16

y=4

A) (-2,4)

Answer Link

Otras preguntas

Why was it important to get the talons of the owl properly drawn on the perch? a. Because they are an important part of the bird. b. When there are overla

exploration of the new world was encouraged by

Derek runs 4 laps around the track. If each lap around the track is 0.25 miles long, and he starts and stops in the same location, what is Derek's displacement?

Which statement best describes the beliefs of the “wets” in the early 1900s?

Using a machine CANNOT increase the amount of ____, but CAN increase the amount of _____. Question 3 options: A. total work done, force being applied to the o

Kristina's mom wants to begin an exercise program. however, she is overweight and concerned about the impact exercise might have on her knees. to decrease her c

What was one difference between President Kennedy and previous leaders?

x+2.79=9.93 and plz be good

What was one of the immediate causes of the United State's entrance into World War I?

How can you use partial quotients to find 684÷57 ? Explain