John made 12 out of 30 free throw shots. About how many out of the next 10 free throw shots would you expect him to make? *

4/10 i believe

Step-by-step explanation:

because with his first mount of shots his percent was 12/30

so just change the denominator by dividing by 3

12/30 divided by 3...

4/10

4/10     the answer is 4/10

5y

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18