what number makes this true 4 = 0.4 x
4 = 0.4 x
4/0.4 = x
10 = x
10 x 10
To determine the number that makes the equation 4 = 0.4x true, we need to isolate "x".
We start by dividing both sides of the equation by 0.4:
4/0.4 = (0.4x)/0.4
This simplifies to:
10 = x
Therefore, the number that makes the equation true is 10.