To estimate the height of a tree, a geometry student measures the shadow of the tree that is 30 feet from the base tree. they place a steak at the top of the shadow. the student is 4 feet from the stake, and the students height is 5.5 ft how tall is the tree

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

can i see the following ?

step-by-step explanation: