Hunter14
Hunter14 Hunter14
  • 25-03-2015
  • Mathematics
contestada

What is the solution to the system of equations?

x=3y+5
x-4y=3

( , )

Respuesta :

0000000
0000000 0000000
  • 25-03-2015
x=3y+5
x-4y=3
3y+5-4y=3
5-y=3
y=5-3
y=2
x=3·2+5
x=6+5
x=11

(2;11)
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 25-03-2015
so one way is to subsitute

from the first equation we know that x=3y+5
so we subsitte 3y+5 for x in the second equation

(3y+5)-4y=3
3y+5-4y=3
combine like terms
5-y=3
subtract 5 from both sdies
-y=-2
multiply -1
y=2

subsitute 2 for y

x=3(2)+5
x=6+5
x=11



x=11
y=2
(11,2)
Answer Link

Otras preguntas

I need help with this and the answer for my alg 2 pls
Factor completely 81x8 − 1.
You're doing a little weekend prospecting in the California foothills and you notice a shiny stone in a shallow creek bed. How would you go about identifying it
When studying Hinduism, the Vedas are very important. What does “the Vedas” mean in Sanskrit? A. knowledge B. power C. love D. wealthy
in march, nick practice soccer for 42 hours. in April nick wants to get even better at soccer and plans to ptactice 18 hours more than he did last month. write
suppose a square garden hose represented by 16x^2 ft^2. what is the length of each side?
Which choice shows the product of 23 and 39?
Can someone explain me why the molar mass become 90.12 g/mol and when I calculated it's 90 g/mol?​
Plz help me with this!! Thank you so much!!
2x^2-5xy-y^3 If x=-3 and y=-2 Using PEMDAS