Answer:
you should know this. you tell me how many?
Rounding to the nearest ten:
28 → 30
188 → 190
250 → 250
101 → 100
122 → 120
If M is the midpoint of segment AB then |AM| = |MB|
|AM| = 50 - 3x|BM| = -20 + 4x
We have the equation:
50 - 3x = -20 + 4x |-50
-3x = -70 + 4x |-4x
-7x = -70 |:(-7)
x = 10
|AM| = 50 - 3x
substitute the value of x:
|AM| = 50 - 3 · 10 = 50 - 30 = 20
Answer: AM = 20
