anonymous
  • anonymous
A wheel made 517 revolutions at 34 4/9 revolutions per minute. How many minutes did it rotate?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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freckles
  • freckles
\[\frac{a}{b} \frac{\text{ rev }}{\text{ min }} \\ \text{ I like to think this means } a \text{ rev } \text{ R }b \text{ min } \\ \text{ treating } R \text{ like a equal sign }\] now we want to know x such that we have 517 rev that we want to find x in 517 rev R x min ... \[a \text{ rev } \text{ R } b \text{ min} \\ \text{ divide both sides by } a \\ 1 rev R \frac{b}{a} \text{ min} \\ \text{ multiply both sides by } 517 \\ 517 \text{ rev }R \frac{517 \cdot b}{a} \text{ min }\] however this is the way I used to solve it you can also setup equivalent ratios and solve that way \[\frac{a}{b} =\frac{517}{x}\] and solve for x
freckles
  • freckles
I just used a/b for your 34 4/9 mixed fraction thing you may want to convert that to improper fraction
anonymous
  • anonymous
\[\frac {rev} {time} = 34 + \frac {4}{9 } \] \[\frac {517} {time} = 34 + \frac {4}{9 } \]

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anonymous
  • anonymous
You guys are awesome, but I just can't get it, its not clicking in my head ):
anonymous
  • anonymous
I keep getting an off number. i don't think i'm simplifying correctly. I keep getting 17807 7/9
freckles
  • freckles
\[34 \frac{4}{9} =\frac{34(9)+4}{9} =\frac{310}{9} \\ \text{ so you have } \\ \frac{310}{9}=\frac{517}{x}\]
freckles
  • freckles
can you solve that for x?
anonymous
  • anonymous
4653/310?
freckles
  • freckles
yes
freckles
  • freckles
that says 310 rev per 9 min is equal to 517 rev per x min where we found x to be 4653/310 which is approximately 15 min
anonymous
  • anonymous
I had that number! And when i tried to convert it to a mixed fraction it all got messed up! lol thank you so much! I'm currently 8 months pregnant and my child is eating up my brains. ):
freckles
  • freckles
oh you want to convert that to mix fraction?
anonymous
  • anonymous
yes i got 15 3/310
freckles
  • freckles
alright sounds cool to me
freckles
  • freckles
I have no idea what it is like to be pregnant but I'm sure it isn't easy.
anonymous
  • anonymous
No its not and even worse when you're taking online classes cause you can't get help on questions like this /: thanks again freckles!
freckles
  • freckles
np good luck and just one more month to go go you! you can do it! :)
freckles
  • freckles
unless you are an alien and you have to carry the baby for like 21 months or something then that is more sad
anonymous
  • anonymous
Yes! I'm excited (: Oh no I'm not an alien, just human ! 9 months and thats it! I couldnt do it any longer haha
freckles
  • freckles
well thank goodness for that
anonymous
  • anonymous
(:
freckles
  • freckles
anyways good luck with your math too (and congrats on the kid on the way)

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