Use substitution to solve the system of
equations: 5x + 5y = -30
2x - y = 15

x = 3, y = - 9

Step-by-step explanation:

5x + 5y = - 30 (1)

2x - y = 15

-y = 15 - 2x

y = 2x - 15 (2)

From equations (1) & (2)

5x + 5(2x - 15) = - 30

5x + 10x - 75 = - 30

15x = 75 - 30

15x = 45

x = 45/15

x = 3

Plug x = 3 in equation (2)

y = 2*3 - 15

y = 6 - 15

y = - 9

Therefore,

x = 3, y = - 9

or

(x, y) = (3, - 9)

7

step-by-step explanation:

yuo ned the activity or vertical angle of the form of 1,7 but 2,2 has a c4,2 as it verticie so i not have a car

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.