jacquelyndiaz620 jacquelyndiaz620
  • 19-01-2022
  • Mathematics
contestada

Given the system of equations below,explain if (6,-9) is a solution or not.

7x+2y=24
8x+2y=30

Respuesta :

stormliqht
stormliqht stormliqht
  • 19-01-2022

Answer:

(6,-9) is a solution.

Step-by-step explanation:

Multiply each equation by the value that makes the coefficients of y opposite.

(-1) · (7x+2y) = (-1) · (24)

8x+2y = 30

Simplify.

-7x-2y = -24

8x+2y = 30

        x = 6

-7 · x - 2y = -24

-7 · 6 - 2y = -24

-42 - 2y = -24

      -2y = 18

         y = -9

Answer Link

Otras preguntas

How many grams of CO2 are in 2.1 mol of the compound? a. 21.0 g b. 44.0 g c. 66.0 g d. 92.4 g
which expression shows the prime factorization of 80
How does a parent bird usually incubate its eggs?
write me a story pls ?
the us constituiton lists things that the government is not allowed to do. This reflects the principle of (limited government) (federated government) (checks a
Ana has a poster board in the shape of a rectangle. she draws 1 line to cut the poster into 2 new shapes. The 2 new shapes have 7 side and 7 vertices in all
True or False: You may exceed the speed limit when passing another vehicle When you approach an empty parking space Many drivers dread the ____________ parkin
four people in a room each shakes hands with each of the others once how many handshakes are there
Is there ever a sound economic reason for governments to spend more than they collect in taxes and borrow the difference
Which term means the unfair treatment of a group of people compared with another group? a. discrimination b. equality c. liberalism d. ethnocentrism