Answer:
Step-by-step explanation:
Let the edge of the cube be a .
Given
Volume V = a³

= 3a² x 2
= 6a²
If a = 40 cm

= 9600 cm³/s .
Answer:
The mistake she made was ; She didn't change the sign when subtracting -3/4 from both sides
She wrote 5/4+3/4 instead of 5/4-3/4
Step-by-step explanation:
Correct solution:

Subtract-3/4 from both sides

Simplify

Answer: x = 9/2
Step-by-step explanation: 24 = 4x + 6
Answer:
y=4x-6
Step-by-step explanation:
8x-2y=12
8x-2y-12=0
8x-12=2y
4x-6=y