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

URGENT PLEASE HELP NOW WILL GIVE BRAINLYIEST The polygons below are similar. Find the value of x. A) 9/2 B) 15/2 C) 12 D) 16

Which is a physical change? A. Chopping onions B. Digesting food C. Burning natural gas D. Exploding dynamite

Find the product. (4m^2 – 5)(4m^2 + 5)

I’m doing an essay about Day of the Dead and I need 15 facts and a minimum of 8 traditions. Can someone help me?

which of these most directly impacts a person's physical health A. friendship B.moodC. Food and nutrition D . feelings

A square room has an area of 100 square feet. What is the length of one side? A. 75 feet B. 50 feet C. 20 feet D. 10 feet

Which word in the sentence is the indirect object? Some computer games teach players useful lessons. A. games B. lessons C. players D. computer Thank you

A fair die is a cube with number 1 through 6 on the sides, represented as painted spots. If a fair die is rolled, what is the probability of number 6 landing fa

Which number shows 6,312 rounded to the nearest ten? 6,300 6,310 6,320 6,330

World War II began with the German attack on which country?