Answer:
Angles 1 and 2 are both 60, and angle 3 is 120
Step-by-step explanation:
Answer:Second Step
Step-by-step explanation:
On the right side in step two you added -3b-15b, and ended up with -12b. This is incorrect. -3b-15b is actually -18b
Start with 15 and add 5 each time.15,20,25,30,35
You would do 200 x 10 which gets you 2000