Question

What is the solution of the system? Use substitution.

x = –2y + 10
–6y = 6x – 6
z = –3x + 10y

will award medal if helped

Answer 1

hmmm. Did I go wrong somewhere?

Answer 2

did u

Answer 3

found it.

Answer 4

Y = 9, sorry!

Answer 5

x = -8

Answer 6

Yes, and x = -8

Answer 7

z=114

Answer 8

and yes, for z just plug in the values.

Answer 9

z = –3x + 10y

x=-8, y = 9

Answer 10

x = -2y+10
-6y = 6x-6

-6y = 6(-2y+10)-6
-6y=-12y+60-6
6y=54
y=9

Answer 11

How many solutions does the system have?

x = -4y + 4
2x + 8y = 8 another medal for this answer

Answer 12

consider the first and the second equation first
x = –2y + 10 -(1)
–6y = 6x – 6 -(2)
Put (1) into (2)
-6y = 6(–2y + 10) -6
-6y = -12y + 54
6y = 54
y=9
x= -2(9) +10 = -18 +10 = -8
put x=-8 and y=9 into z = –3x + 10y
z= -3(-8) + 10(9) = 24+90 = 114

Answer 13

It has 0 solutions

Answer 14

im gonna repost another question the same one and answer it on that question so i can award the medal cool?

Answer 15

x = -4y + 4 -(1)
2x + 8y = 8 -(2)
when (1)X2, we will get (2)
--> not solvable since the 2 given equations are the same

Answer 16

or we should say infinitely many solutions

Answer 17

its either no solutions or infinately many which one

Answer 18

graphs of the functions coincide, so it has infinitely many solutions

Answer 19

It's unsolvable... but you could say infinitely many solutions.

Answer 20

anyone knows What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9

Answer 21

x = -9

Answer 22

y = -9 . is this correct? :)

Answer 23

yup