The green arrow thing is a ray. So, question b. is a ray. So the dot would be B and the arrow would be C.
Answer:

Step-by-step explanation:
we have

Solve for h
That means----> Isolate the variable h
Adds 6 both sides


Multiply by 10 both sides


Add the two known angles together and subtract that number from 180° and that is your answer.
5..........................
Answer:
option c, 70%
Step-by-step explanation:
80 total keychains
24 are blue
80 total keychain - 24 blue keychain = 56 non blue key chain
the probability of chooising one of these 56 keychain is
56 / 80 = 0.70
0.70 x 100% = 70%
OR
the probability of chooising a blue keychain is
24 / 80 = 0.30
1 - 0.30 = 0.70 (1 = the total amount)