Answer
Find out the how many hours has Carlos practiced piano .
To prove
As given


Than

L.C.M of (4,10) = 20



Therefore the total hours Carlos practiced piano is 1.45 hours .
It would have 0 x-intercepts.
If P <span>is the midpoint of DE then
DE = 2(DP)
10x - 12 = 2(3x + 2)
10x - 12 = 6x + 4
10x - 6x = 4 + 12
4x = 16
x = 16/4
x = 4
DP = 3x + 2 = 3 * 4 + 2 = 12 + 2 = 14 units</span>