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Mathematics 10 Online
OpenStudy (danieke):

A cyclist rides his bike at a rate of 18 miles per hour. What is this rate in feet per second? How many feet will the cyclist travel in 15 seconds? In your computations, use the fact that1 mile is equal to 5280feet. Do not round your answers. Rate:fts/s Distance travelled in 15 seconds:ft

OpenStudy (kamibug):

So if 1 mile is equal to 5280 feet, how many feet is 18 miles?

OpenStudy (danieke):

@KamiBug so i multiply them?

OpenStudy (kamibug):

Yep :) That's the first step.

OpenStudy (kamibug):

18 * 5280 = ?

OpenStudy (danieke):

95040

OpenStudy (danieke):

am i right

OpenStudy (kamibug):

Yep! Now we need to figure out how many seconds are in an hour. Since there are 60 minutes in an hour and 60 seconds in a minute. 60*60 will give you that answer. :)

OpenStudy (danieke):

so divide 95040 by 120?

OpenStudy (kamibug):

Oops, we're not multiplying 60 by 2. We are multiplying 60 and 60. So not 120, but .... 60*60= ?

OpenStudy (danieke):

3600?

OpenStudy (kamibug):

Right :) Then, as you said, we would divide. 95040 / 3600

OpenStudy (danieke):

should it be a fraction or decimal?

OpenStudy (kamibug):

A decimal would be best in this case. :)

OpenStudy (danieke):

26.4

OpenStudy (kamibug):

Correct! Just make sure to use your units of measure. 26.4 feet per second.

OpenStudy (danieke):

thank you so much :)

OpenStudy (kamibug):

No problem :D Feel free to tag me for any other help you need.

OpenStudy (danieke):

@KamiBug

OpenStudy (kamibug):

Hi!

OpenStudy (danieke):

so whch one is the rate?

OpenStudy (kamibug):

The one we worked on is the answer for rate. :) Silly me, I totally forgot about the second question Lol. Let's see... what do you have so far?

OpenStudy (danieke):

Distance travelled in 15 seconds:ft we have to find this?

OpenStudy (kamibug):

Yep. So since we know now that in one second he can travel 26.4 feet, how many feet can he travel in 15 seconds? :)

OpenStudy (danieke):

396?

OpenStudy (kamibug):

Good job ^_^

OpenStudy (danieke):

will you be on tomorrow at five ? cause i need more help

OpenStudy (kamibug):

I can't guarantee it but I will try :)

OpenStudy (danieke):

thank uu

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