marinamariah
marinamariah marinamariah
  • 14-07-2017
  • Mathematics
contestada

solve each system of equations using elimination.

solve each system of equations using elimination class=

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 14-07-2017
add them to eliminate x terms

x+3y=-7
-x-7y=19 +
0x-4y=12

-4y=12
divide by -4
y=-3
sub back
x+3y=-7
x+3(-3)=-7
x-9=-7
x=2

(x,y)
(2,-3)
Answer Link

Otras preguntas

what is 6 times 2/3 (two thirds)?
Gabriella wants to tile a room with an area of 320 square feet. The width of the room is 4/5 its length. What are the length and width of the room?
Carmen is at a used bookstore. Paperback books cost $ 1 each, and hardcover books cost $ 2 each. Carmen can spend up to $ 10 in all.A. Write an inequality that
which word comes from a latin word meaning lattice
2x + y = 3 x - 2y = -1 If equation one is multiplied by 2 and then the equations are added, the result is _____.
Carmen is at a used bookstore. Paperback books cost $ 1 each, and hardcover books cost $ 2 each. Carmen can spend up to $ 10 in all.A. Write an inequality that
2.375 divided by 0.05
Skateboard Revenue: A skateboard shop sells about 50 skateboards per week for the price advertised. For each $1 decrease in price, about 1 more skateboard per w
Carlos is walking on a moving walkway. His speed is given by the function C(x) = 3 x 2 + 3x - 4, and the speed of the walkway is W(x) = x 2 - 4x + 7. 20.
How many outcomes are there if you roll two dice with side sides