Answer:
8.9
Step-by-step explanation:
(- 3, 8) and (5,4)
Sqrt[(5 - - 3)^2 + (4-8)^2]
Sqrt [(8)^2 + (- 4)^2]
Sqrt 80
= 8.9
2a + 8a simplified is 10a
answer is e
hope.it helps
plz mark as brainliest
C. A ray has no endpoint