We can solve this problem by using the distance formula. The distance formula is:
We can now put in values and solve.

128 = a + + 4(a + 10) + (a + 10)
128 = a + 4a + 40 + a + 10
128 = 6a + 50
128-50 = 6a
78 = 6a
13 = a
1st = a = 13
2nd = 4(a + 10) = 4(23) = 92
3rd = a + 10 = 23
The distance between the points is 10.4
Answer:
x is 10.3
Step-by-step explanation:
See photo. I hope it helps