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

PLEASE HELP Karla notices some of the warning signs of depression in her brother, so she searches online for information and help. She finds a website that has

which statements are true about the ordered pair (-1,5) and the system of equations x+y=4 x-y=-6

A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread during a visit to the grocery store

what contributed to the “machine” type of city government

Approximately how many atoms of carbon are present in a 120 gram sample of carbon?

The smallest particle of an element is called what ??

what is the most important thibg one must do when solving an algerbraic equation

______ deals primarily with governmental powers, civil rights, and civil liberties.

Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-Pg Boundary? They found evidence of wildfires in many regions throug

Simplify the fraction