Ask your own question, for FREE!
Mathematics 20 Online
OpenStudy (anonymous):

John ran the 100-m dash with a time of 9.93 sec. If this pace could be maintained for an entire 26-mile marathon, what would his time be?

OpenStudy (anonymous):

First off how many meters are in a mile?

OpenStudy (anonymous):

1,609

OpenStudy (anonymous):

ok so take the total meters 1,609 and divide it by 100m how many do you get

OpenStudy (anonymous):

16.09

OpenStudy (anonymous):

ok now you take that number and multiply it by the time for his 100 meter run

OpenStudy (anonymous):

his time being 9.93

OpenStudy (anonymous):

0k, 159.7737

OpenStudy (anonymous):

ok now what does that number equal

OpenStudy (anonymous):

or i should say what does that number represent?

OpenStudy (anonymous):

that would be a little of 2 hours?

OpenStudy (anonymous):

sorry, a little over 2 hours

OpenStudy (anonymous):

it is his mile time so if he were to run a 26 mile race you would have to take his mile time (159.73) times 26 then divide that number by 60 to git the time down to the minuets.

OpenStudy (anonymous):

I need to provide the hour, minutes, and seconds. The hour is 1. I have that correct, but not the minutes or seconds. I hate math!

OpenStudy (anonymous):

that is 159.73 seconds

OpenStudy (anonymous):

I multiplied that by 26 and divided by 60. I got 69.21. I divided that again by 60 and got 1.15.

OpenStudy (anonymous):

I was told I have the first half of the answer right which is 1 hour, but not minutes or seconds.

OpenStudy (anonymous):

what would 1.15 hours break down to ?

OpenStudy (anonymous):

It said the answer was 1 hr. 9 mins. and 15 seconds. I got it wrong, so it gave me a whole new problem to work on. Though it is a similar problem to the one we just worked on.

OpenStudy (anonymous):

well 1.15 hours breaks down to 1 hour and nine minuets because 9 minuets would be .15 of a hour

OpenStudy (anonymous):

what is the new problem

OpenStudy (anonymous):

Still a 100 m dash with a time 9.84, how much time take for a 26 mile marathon?

OpenStudy (anonymous):

So far, I took 16.09 and multiplied it by 9.84 which equals 158.32. Then I multiplied that by 26 and divided by 60 which equals 68.60. I divided that by 60 again which equals 1.14.

OpenStudy (anonymous):

Which would equal out to 1 hour 8 minutes and 4 seconds? Right?

OpenStudy (anonymous):

im checking

OpenStudy (anonymous):

8 minuets 24 second because when you multiply the hour 60 by .14 you get 8.4so 8 minuets and .4 of a minuet so then you multipy 60 by .4 and get 24

OpenStudy (anonymous):

so final answer 8 min 24 seconds

OpenStudy (anonymous):

ok, it said the first and second answers were correct but not the third

OpenStudy (anonymous):

what was the firs and second answers? and are you on apex or some computer learning?

OpenStudy (anonymous):

1 hour, 8 minutes...my math lab for pre-calculus algebra...it shows you an example similar to the problem you are working on, but I still could not seem to figure it out. With the way you are explaining it, I understand how to figure it out better.

OpenStudy (anonymous):

ok i am glad i could help. they could be rounding to the nearest minuet.

OpenStudy (anonymous):

Ok, I have on more opportunity to answer correctly before it gives me a new problem.

OpenStudy (anonymous):

what is the problem? and are there multiple choice answers for each question

OpenStudy (anonymous):

This is the message that popped up when I got it wrong....Your first and second answers are correct, but your third answer is wrong. First, we need to have a common measure of distance. We can do this by expressing 26 miles and 100 meters in feet. We know 1 meters=3.281 ft and 1 mi=5280 ft. Let x= time he runs the marathon in seconds. Use the fact that the rate remains the same and write and equation. To find the number of minutes, divide the time in seconds by 60 since there are 60 seconds in a minute. In a similar way, find the number of hours by dividing the number of minutes by 60 since, since 1 hr = 60 mins.

OpenStudy (anonymous):

It is the same problem we have been working on. I have three opportunities to answer the question correctly before it counts the question wrong and then I can choose to get a similar question.

OpenStudy (anonymous):

so we have already gotten it right?

OpenStudy (anonymous):

no, im a still wrong when comes to the seconds

OpenStudy (anonymous):

The answer was 1 hr 8 mins and 37 secs.

OpenStudy (anonymous):

I was litterally just about to say that

OpenStudy (anonymous):

I am hoping that 3rd times a charm.

OpenStudy (anonymous):

Holy pellet! I got it right!

OpenStudy (anonymous):

Thanks again for all your help!! I really appreciate it!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!