Solve the following system of equations by the substitution method. 10x + 10y = 1 x = y - 3 what is the value of y? -29/20 31/20 -3/2

31/20

Step-by-step explanation:

10x + 10y = 1 (1)

x = y - 3

substituting x = y - 3 in equation (1)

10(y - 3) + 10y = 1

10y - 30 + 10y = 1

20y - 30 = 1

20y = 1 + 30

20y = 31

divide 20 by bothside

20y/20 =31/20

y=31/20

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.