Answer:
midpoint is (-1,4.5)
Step-by-step explanation:
Use the midpoint formula: 
x coordinate of midpoint equals [(-4) + (2)]/2 = -1
y coordinate of midpoint equals [(4) + (5)]/2 = 4.5
Answer: c 17.9°
Step-by-step explanation:
Answer:
2nd one
Step-by-step explanation:
Answer:
10
Step-by-step explanation: