gretchenglg gretchenglg
  • 02-12-2020
  • Mathematics
contestada

What number would you multiply the 2nd equation by in order to eliminate the y terms?
4x - 4y = 16
2x + y = 5

Respuesta :

jahzara06
jahzara06 jahzara06
  • 02-12-2020

Answer:

x=3

y=-1

Step-by-step explanation:

first multiply the 2nd row by 2 so you will get

4x-4y=16

4x+2y=10

then subtract the 2nd row from the first row and so you will get

-6y=6

then solve for y in the above equation

y=-1

then substitute y=-1 into any 2 equations .

i picked the first 1

4x-4 × -1=16

then solve for x .

you will get

x=3

Answer Link

Otras preguntas

Background information: In September 1941, this law was passed in Germany. Why would Hitler pass a law requiring Jewish people to wear a yellow star? Check all
Three subtracted by a square of a number
which of the following portions are true A. 20/48 = 40/90 B. 25/40 = 48/80 C. 18/48 = 27/72 D. 12/15 = 21/25
In the straight line of gradient 3 and passes through the point (0,2), i. Write down the intercept. ii. Write down the equation,​
help solve for x pt2.
4. Given the diagram below what is the length of RS or the distance across a body of water?
.The pupils left their bicycle leaning_______the wall.1 pointfortoagainstby
how many atoms of gold are present in 0.6 gm of 18 caral gold? ( 24 caral gold in 100% pure) atomic weight of gold = 197?​
this help me please. ​
find a factor of 5, 15 and 25​