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
Im not sure but I would seem that the first plan is much better due to the cost. I know this is not an answer but just saying and there just a $0.004 diference wich is practicly the same
Pam and her brother both open savings accounts. Each begin with a balance of zero dollars. For every two dollars that Pam saves in her account, her brother saves five dollars in his account.
1. Determine a ratio to describe the money in Pam’s account to the money in her brother’s account. :
2. If Pam has dollars in her account, how much money does her brother have in his account? Use a tape diagram to support your answer.
Pam’s brother has dollars in his account.
3. Record the equivalent ratio. :
4. Create another possible ratio that describes the relationship between the amount of money in Pam’s account and the amount of money in her brother’s account. Answers will vary. :, :, etc.
I hope I helped! :)
Answer:
5
Step-by-step explanation:
12+12+12= 36
36-7= 29
3+3+3=9
29-9=20
20÷4=5
True!
90 hundreds is equal to 900 tens
90 times 100= 9000
900 times 10= 9000
