When you regroup you are basically breaking down the problem.
You would do 60 + 40=?
Then you would do 4 + 3= ?
Your answer would come out to 107
I would say something along these lines: You are walking along a path, and then someone follows you. You then jog a little faster, but the stalker is coming. You then start to run away from the stalker. You realize that you are taking too long, so you jump on a bicycle. The stalker goes in a bicycle, so you jump onto a moving train to get away from him without stopping.
Answer:
The perimeter of a semicircle is the sum of the half of the circumference of the circle and diameter. As the perimeter of a circle is 2πr or πd. So, the perimeter of a semicircle is 1/2 (πd) + d or πr + 2r, where r is the radius.
Answer:
Step-by-step explanation:
when adding logs, apply the log rule: 
∴ 
when subtracting logs, apply the log rule: 
