Maya wants to mark a length of 7 inches on a sheet of paper, but she does not have a ruler . she has pieces of wood that are 4 inches 5 inches, and 6 inches long. explain how she can use these pieces to mark a length of 7 inches.

yes. we do proportions in probabilities.

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