Answer:
(-1, -2.5)
Step-by-step explanation:
the midpoint of a segment is 
, given points (x1, y1) and (x2, y2)

The answer for that is 102036672
Answer:
$171.12
Step-by-step explanation:
Including the tip and cost, it is 171.12. Multiply 148.6 by 1.15, which includes the total cost plus another 15% for the tip.
Let X represent the length of the chord.
By using Pythagoras' Theorem:
4^2 + (X/2)^2 = 15^2
(X^2)/4 = 209
X^2 = 836
X = 28.91
1 -2 pretty sure thats the one