Heygirl9632 Heygirl9632

04-05-2021
Mathematics

contestada

Which system of equations is equivalent to the system of equations shown? 2x + 5y = -2 4x + 7y = 8

Respuesta :

Yang100 Yang100

05-05-2021

Answer:

x=9, y=-4. (9, -4).

Step-by-step explanation:

2x+5y=-2

4x+7y=8

--------------

-2(2x+5y)=-2(-2)

4x+7y=8

---------------------

-4x-10y=4

4x+7y=8

--------------

-3y=12

y=12/-3

y=-4

2x+5(-4)=-2

2x-20=-2

2x=-2+20

2x=18

x=18/2

x=9

Answer Link

Otras preguntas

Find the error in this problem.

Atp and gtp are primary sources of energy for biochemical reactions. (a) describe the structure of the atp or the gtp molecule. (b) explain how ch

Please Help! 35 points! Brainliest awarded! What value of x would make the expression below equal to 8?

10 things I know about you: 1. You are reading this 2. You are a human 3. You can't say the letter "p" without separating your lips 4. You just attempted to

Who was the first african american nfl player

Carla’s Clothing Shop opened 18 years ago. The first year she made $2,000 profit. Each year after her profits averaged 50% greater than the previous year . Is t

Emilio's savings account had a balance of $621.96 at the end of July. During August, he made three savings account deposits of $83.11, $52.89, and $307.84 and o

All the gases which surround a star or a planet

Write an explicit formula.

what happen if I don't do end of the year finals