Normally, I would say that PC (with the line over it) would mean point P to point C, but I do not see point P on the image. Is that the part you don't understand? There being no P?
Chemical energy is stored in a batter then it's converted to electric energy
Answer:
I kinda forgot how to do this but just to let you know the last question is off the screen.
Step-by-step explanation:
Answer:
answer should be 52.4 mins
Step-by-step explanation:
find the midpoint for each time:
1. 15mins = 7students
2. 45mins = 27 students
3. 75mins = 12 students
4. 100 = 4students
Then, do the normal mean calculation by adding up all the values and dividing it by 50.
7*15 + 27*45 + 12*75 + 100*4 = 2620
2620/50 = 52.4mins
I believe the answer is 3/8, if i'm wrong then i really sorry
