recall that the reference angle, is the angle made by the terminal point with the x-axis.
Check the picture below.
Answer: 15 mL
Step-by-step explanation:
Before the stone the reading was 180 mL
When the stone was added the reading rose to 195 mL
So, we subtract them both, this will give us the volume of the stone
195 mL - 180 mL = 15 mL
Divide by 5.
500/5 = 100
100/5 = 20
20/5 = 4