Derrick rode 21 total km.
You can find this by adding the 3 distances together and multiplying by 3. Also remember to watch the units as 500m = .5km.
The rule for clockwise rotation of 90 degrees about the origin is (-y, x).
So (-1,9) would now be (-9,1).
Hope this Helps!!
Answer:
216
Step-by-step explanation:
180 times .2 (20 percent in decimal form) = 36
36+180=216
