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Mathematics 7 Online
OpenStudy (anonymous):

Help!! A person’s maximum running speed s (in meters per second) can be approximated by the function s = pie square root 9.8l/6 where l is the person’s leg length (in meters). To the nearest tenth of a meter, what is the leg length of a person whose maximum running speed is about 3.4 meters per second?

OpenStudy (anonymous):

it's 9.8 (with the letter l after it , not 1)

OpenStudy (anonymous):

does s= pi√( (9.81 X L /) 6)

OpenStudy (anonymous):

like is the 9.8L/6 inside the square root

OpenStudy (anonymous):

Yes & yes.

OpenStudy (anonymous):

you'll have to substitute s for 3.4 and then solve for L

OpenStudy (anonymous):

OpenStudy (anonymous):

6.0? 0.o

OpenStudy (anonymous):

i actually got something less than 1

OpenStudy (anonymous):

I'm pretty clueless on how to do this, lol . Was i supposed to multiply pi by 6? then divide it by 3.4^2?

OpenStudy (anonymous):

nope,... I don't know how to word this XD... um.. you'll divide 3.4 by pi and your result from there you square it. then multiply that by 6 and divide by 9.8

OpenStudy (anonymous):

since the 3.4 and pi are in parenthesis that should be done first.

OpenStudy (anonymous):

0.717?

OpenStudy (anonymous):

yea, that's what i got

OpenStudy (anonymous):

Thanks .

OpenStudy (anonymous):

you're welcome :)

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