Ashleymackenzie2015
Ashleymackenzie2015 Ashleymackenzie2015
  • 04-01-2016
  • Mathematics
contestada

How many solutions are there to the following system of equations?
5x 3y=7
2x-y=2

Respuesta :

Billymkhoi
Billymkhoi Billymkhoi
  • 04-01-2016
5x + 3y = 7 (1)
2x - y = 2 (2)

Multiply (2) by 3:
6x - 3y = 6 (3)

Take (1) + (3):
(5x + 6x) + (3y-3y) = 7+6
⇒ 11x = 13
⇒ (11/11)*x= 13/11
⇒ x = 13/11.

y = 2*13/11 -2= 4/11

The final answer is x=13/11, y=4/11.

Answer Link

Otras preguntas

plsss help asnwer a and b plsss asap!!!!!!Croakie is certainly a remarkable frog. Now he has developed even more amazing tricks! This time, he starts at point A
Solve the following proportion for u 3/11 = u/4 and round your answer to the nearest tenth
PLEASE HELP ME!!! Will give Brainliest! NO LINKS
Name and briefly define the quantitative methods of control brainly.
Which lender most likely offers the best options on a short-term loan?a payday lenderb a mortgage lenderc a title lenderd a bank or credit union​
Find the missing side for each triangle below
Two pumps at a local water facility can only run individually. They will run for at least 18 hours in a day but obviously no more than 24 hours in a day. Pump 1
Need help with a and b.
8TH GRADE MATH g(3)=
Which led to increased turmoil between Jews and Arabs? Check all that apply. The creation of Israel anti-Semitism in Germany the Balfour Declaration the Camp Da