Is there supposed to be a picture included?
Answer:

Step-by-step explanation:
400^2 = 160,000
5 2/6 = 32/6 = 16/3
6 70/30 = 250/30 = 25/3
16/3 * 25/3 = 400/9
400/9 / 160,000 = 1/3600
Answer:
-35
Step-by-step explanation:
- 4ac = (1)(1) - 4(-3)(3) = 1 - 36 = -35
I hope this helps you
PQ^2=9^2+14^2-2.9.14.cos20
PQ^2=81+196-236
PQ^2=41
PQ~6,4