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 solve number 27.) -5(3-q) +4 =5q-11

What was the casta system, and why was it created?

Is 730.921 less than, greater than, or equal to 730,921?

A rectangular park is 150 yards on one side and 125 yards on the other. if Debbie walks around the park two times, how far does she walk

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.00 m/s. The car is a distance d away. The bear is 37.2 m

What is 28.09 to the nearest tenths

Manuel has 15 goldfish. This is 6 more than Quinn has. How many goldfish does a Quinn have?

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.00 m/s. The car is a distance d away. The bear is 37.2 m

19-10x+4=4x-5 i dont understand this equation

rounding 672,831 to the tens place? hundreds place? thousand place? ten thousand place? and hundred thousands place?