Answer:
A is the anser
Step-by-step explanation:
Check the picture below.
let's recall that 2π is a full go-around or namely a revolution

Answer:
D
Step-by-step explanation:
We can test each pair making each ratio into its simplest form.
For A 2/3 is already in its simplest form and 9/15=3/5. they are not equivalent.
For B, 5/8 is already in its simplest form and 15/21=5/7. they are not equivalent.
For C, 3/12=1/4, and 6/18=1/3. They are not equivalent.
For D, 4/10=2/5, and 12/30=2/5. They are equivalent.
Answer:
It is the 3rd graph. The other dude lied and tried to trick me but its the 3rd graph.
Step-by-step explanation:
The 3rd graph C