ANSWER: 180°
EXPLANATION: 360-180=180
Answer:

Step-by-step explanation:
The magnitude of 3D vector
can be given by the following:

Plugging in given values, we have:
.
Answer:
3/10
Step-by-step explanation:
- total marbles: 6+9+5 = 20
- blue marbles: 6
- 6/20 = 3/10