markgodoy873 markgodoy873

12-04-2021
Mathematics

contestada

Solve the system of equations using substitution.
-4x-8y=40
y=-4

Respuesta :

colombusgirl colombusgirl

12-04-2021

x + y = 40

y = 9x

x + 9x = 40 (substitute 9x for y in 1st equation)

10 x = 40
x = 4

4 + y = 40 (substitute 4 for x in 1st equation)
y = 36

Answer Link

Otras preguntas

what is 0.29 as a fraction in simplest form

Resocialization, or adopting new norms and patterns of behavior, happens frequently in which of these situations? a. Prisons b. The military c. Therapy group

what is 1.48 rounded to the nearesr hundredth

write a Real world situation that could be modeled by the equation 120+25x=45x

In order for people to spend money, they need confidence that they will _____ in the future. experience hyperinflation have an economic downturn earn more money

What year did George Washington became president?

All of the following are excretory organs except the A. skin. B. lungs. C. heart. D. kidneys.

What causes the jet stream?

which is a reason for rapid growth of labor unions in the late 1800s

PCP is more commonly known as ___________ a. ecstasy. b. acid. c. angel dust.