I need help with a hard math problem.?

Question

Please explain how you do it because I want to learn.Okay here is the problem.
If 30 million earthquakes happen each year.How many happen in one month,one week,one day,one hour,one minate and every 10 seconds?
I know that it is a long problem but I need the extra credit.I have a C in math so I am trying to show my parents that I can do math.

Answer 1

One month:

If there are 12 months in a year, and 30 million earthquakes a year, the number of earthquakes per month is 30 million divided by 12= 2,500,000 earthquakes per month

One week:

If there are 52.177457 weeks in a year (this is just a known number), then there are 30 million divided by 52.177457 earthquakes per week= 574,961 earthquakes per week.

One day:

7 days in a week; 574,961 earthquakes per week--> divide 574,691 by 7= 82,137 earthquakes per day
( you could also do this by dividing number per year by days in a year which is 365)

One hour:

24 hours in 1 day; 82,137 earthquakes per day--> divide 82137 by 24= 3,422 earthquakes per hour

One minute:

60 minutes in an hour; 3,422 earthquakes per hour--> divide 3,422 by 60=57 earthquakes per minute

One second

60 seconds in a minute, which is 6 sets of 10 seconds; 57 earthquakes per minute--> divide 57 by 6= 9.5 earthquakes every 10 seconds

Answer 2

well, there is 12 months in a year, right?
so if 30 million happen in a year, if you divide it by 12, it should show how many on average happen in a month, because you split the 30 million earthquakes into equal portions. Now, do the same thing for the other times and you should get it easily.
If you know how to do it, it's simple, even though it looks long. Get the right tutor and you can raise ur grade up to an A for sure.

Answer 3

divide the number of earthquakes per year (30 million) by
1. the number of months in a year (12): so it's 30,000,000/12
2. the number of weeks in a year (52): 30,000,000/52
3. the number of days in a year (365): 30,000,000/365
4. the number of hours in a year (365 days x 24 hours per day): so this is 30,000,000/8760
5. the number of minutes in a year (365 days x 24 hours x 60 minutes per hour): so this is 30,000,000/525,600
6. the number of seconds in a year (365 days x 24 hours x 60 minutes x 60 seconds per minute): so this one is 30,000,000/31,536,000
7. but you want the number in 10 seconds so it's actually 10 times the answer in 6 above.

Given that much information, you should be able to multiply these numbers out and then divide those numbers into 30 million.

Since you really want to do at least some of the work yourself,
I will let you figure out the answers.

Good luck on your extra credit!

Answer 4

First, you do 30 million divided by 12 because there are 12 months in a year and that gives you 2,500,000 earthquakes a year. Then you take that number and divide it by 4 because there are 4 weeks in a month and you get 625,000. Then you take that number and divide it by 7 because there are 7 days in a week and you get about 89,286. Then, you take that number and divide it by 24 because there are 24 hours in one day and you get about 3,720. Then you divide it by 60 because there are 60 minutes in an hour and you get about 62. Then you take that number and divide it by 6 because if you take 60 and divide it by 10, you get 6 and you get about 10 earthquakes every 10 seconds.

Answer 5

1. Let S be a set such that for each element x of S there exists a unique element x' of S. 2. There is an element in S, we shall call it 1, such that for every element x of S, 1 is not equal to x'. 3. If x and y are elements of S such that x' = y', then x = y. 4. If M is any subset of S such that 1 is an element of M, and for every element x of M, the element x' is also an element of M, then M = S. Just as a matter of notation, we write 1' = 2, 2' = 3, etc. We define addition in S as follows: (a1) x + 1 = x' (a2) x + y' = (x + y)' The element x + y is called the sum of x and y. Now to prove that 1 + 1 = 2. From (a1), with x = 1, we see that 1 + 1 = 1' = 2.

Answer 6

30,000,000 earthquakes per year
= 30,000,000/12 = 2,500,000 earthquakes per month
= 30,000,000/52 = 576,923 earthquakes per week
= 30,000,000/365 =82192 earthquakes per day
= 82192/24 = 3425 earthquakes per hour
= 3425/60 = 57 earthquakes per minute
= 57*10/60 = 9.5 eartquakes every 10 seconds
So there is roughly 1 eartquake per second. Good thing most of them are very low an the Richter Scale or we wouldn't be around long.

Answer 7

First, hon, find out how many in a month.... divide by 12, since there are 12 months in a years...
Then divide 30,000,000 by 52, because that is how many weeks there are in a year,,,, and you should be able to do the rest...

Answer 8

what you do is take 30mill and divide that by 12(months) then take 30mill and divide by 52(weeks) then take 30mill and divide by 365(days), then 30mill divided by (365x24)(hours), and i think you get the idea

Answer 9

82191.78082 per day
575342.4658 per week
2500000 per month
3424.657534 per hour
57.07762557 per minute
9.512937595 per 10 seconds

Answer 10

the answer is 24