A cube has a surface area of 24 ft squared .What is the length of on edge of the cube?

Surface area= 24 ft^2

A cube has 6 faces, so the surface area of 1 face would be 24/6, which is 4 ft^2.

The formula for the area of a square is l x w, but in a square both are equal so you're essentially squaring one side.

Therefore, the area of a square ( 4 ft^2 ) can be square-rooted in order to find the length of an edge.

= 2

Therefore, the length of 1 edge of the cube is 2 ft

(I think)

51-50

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