jcoello93 jcoello93
  • 21-04-2021
  • Mathematics
contestada

3x+4y=-12 x-y=10 using elimination no links or download

Respuesta :

sygify
sygify sygify
  • 21-04-2021

Answer:

x = 4, y = -6

Step-by-step explanation:

Elimination Method

3x + 4y = -12 ---- (1)

x-y = 10 ---- (2)

(2) x 4:

4(x) 4(-y) = 4(10)

4x - 4y = 40 ---- (3)

(1) + (3):

3x + 4y + (4x - 4y) = -12 + 40

3x + 4y + 4x - 4y = 28

7x = 28

x = 28/7

x = 4

Sub x = 4 into (2):

(4) - y = 10

-y = 10 - 4

-y = 6

y = -6

Answer Link

Otras preguntas

A student sets up a compost bin outdoors. Inside the bin microorganisms convert the student’s vegetable and paper scraps into rich fertilizer.Which of the follo
Please help with this
Which food should you avoid to keep your digestive system healthy? A. Whole Grain Foods B. High Fiber Foods C. Water D. Fatty Foods
Did John Paul Jones have a part in the Second Continental Congress?
For deep processing to occur, it is better to study in __________ session(s) than in __________ session(s).
Will something with the density of 31 sink or float?
Generally, people buy one product or service instead of another because they perceive it to be a better value. a. True b. False
SPANISH HELP ASAP!1.choose the correct response for the following question A) ¿ Què día es hoy? - Hoy es día lunes - Hoy es el lunes- Hoy es lunes - Hoy es el d
In a standard deck of cards, the jack, queen, and king are "face cards." you draw a card from a standard deck. your friend peeks and lets you know that your car
a chunk of an asteroid that has broken off in outer space is called a