Bryan is making a wooden cube to hold his little sisters jewelry. the volume of the cube is 512 in.3. what is the length of one side of the jewelry box?

The length of one side of the jewelry box is 8 inches

Step-by-step explanation:

we know that

The volume of a cube is equal to

where

b is the length side of the cube

In this problem we have

substitute in the equation and solve for b

so

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

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