Now that you know the number of singles, doubles, triples, and home runs that Ty Cobb had in
the 1918 season, find his slugging average out of 421 at-bats. Write your answer as a decimal
rounded to the nearest thousandth.

Just Divide. 421 by the three numbers that you have not listed and then add those 3 numbers together.

Step-by-step explanation:

Hope this helps

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