Answer:

Step-by-step explanation:
Note that
sin135° = sin(180 - 135)° = sin45° =
= 
Answer:
18
Step-by-step explanation:
5 scores so far + next quiz =6 scores
6 times 16=96
She has to get a quiz score sum of 96 to get an average of 16
18+15+16+14+15=78
96-78=18
Answer:
-2
Step-by-step explanation: