Find the solution to the following system of equations.
y= -2x + 4
2x – 3y = 18

(3.75, -3.5)

Step-by-step explanation:

y= -2x + 4  -->     2x +  y=  4

2x – 3y = 18 --> 2x – 3y = 18

use elimination

3(2x+y=4) -->   6x+3y=12

                      2x-3y=18

                       8x    = 30

divide by 8

x=3.75

2(3.75)+y=4

7.5+y=4

subtract 7.5 from both sides

y= -3.5

(3.75, -3.5)

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: