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C1 help

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I cannot figure how to work from I - help is appreciated


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Reply 1
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BabyMaths
Original post by Coerce
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I cannot figure how to work from I - help is appreciated


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Change the mixed number to an improper fraction and all will become clear.
Reply 2
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Coerce
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Original post by BabyMaths
Change the mixed number to an improper fraction and all will become clear.


Would the improper fraction be 2/8ths I think I'm approaching it wrong


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Examsolutions.net is a good website to help with A-level maths.
Original post by Coerce
Would the improper fraction be 2/8ths I think I'm approaching it wrong


You think that 1916=281\frac{9}{16} = \frac{2}{8} ?

Are you looking at a different question?
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Coerce
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Original post by TenOfThem
You think that 1916=281\frac{9}{16} = \frac{2}{8} ?

Are you looking at a different question?


Oh I foolishly looked at a different question.. I'm confused on howitzer I times it out


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Original post by Coerce
Oh I foolishly looked at a different question.. I'm confused on howitzer I times it out


Do you know what 19161\frac{9}{16} is as a single fraction?

Do you know what a power of 12\frac{1}{2} means?
Reply 7
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Coerce
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Original post by TenOfThem
Do you know what 19161\frac{9}{16} is as a single fraction?

Do you know what a power of 12\frac{1}{2} means?


a 27/16

b Yes
Reply 8
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Coerce
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* Square rooting
Original post by Coerce
a 27/16


No


b Yes


So - once you have the correct fraction this should be straightforward
(edited 9 years ago)
So for question i as a top heavy fraction its (25/16) to the power of 3/2. So treat everything separately. First if something is to the power of a half that's the same as square rooting everything so you get 5/4 to the power of 3. Now cube everything so125/64...
Hope that makes sense 😊
Reply 11
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Coerce
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Original post by TenOfThem
No



So - once you have the correct fraction this should be straightforward



Oh wow i can't add together 9 + 16 oh dear lol
Original post by josephinemar25
...


Perhaps you are unaware of the sticky on the front page of maths that gives posting guidelines

No full solutions
Reply 13
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Coerce
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Original post by josephinemar25
So for question i as a top heavy fraction its (25/16) to the power of 3/2. So treat everything separately. First if something is to the power of a half that's the same as square rooting everything so you get 5/4 to the power of 3. Now cube everything so125/64...
Hope that makes sense ������



Ahhh I get that!

So you basically had to turn it to top heavy then square root the numericals involved (25/16) to 5/4 and cube it cause of the power 3/2!

Seems so simple! That is all I needed thank you very much!!
Original post by Coerce
Oh wow i can't add together 9 + 16 oh dear lol


lol

easily done

- so you know that you need to square root - and then?
Original post by Coerce
That is all I needed thank you very much!!


hmmm - shame - you were getting there yourself :frown:
Reply 16
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Coerce
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Original post by TenOfThem
Perhaps you are unaware of the sticky on the front page of maths that gives posting guidelines

No full solutions


In some instances that is a bit of a stupid rule..
Reply 17
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Original post by TenOfThem
hmmm - shame - you were getting there yourself :frown:



Oh i see, yeah I guess it would have been better if doing it myself haha!

Thanks for your help sorry I seemed a bit stupid lol
Original post by Coerce
Oh i see, yeah I guess it would have been better if doing it myself haha!

Thanks for your help sorry I seemed a bit stupid lol


TBH - you were almost there -

With indices always try to break down into the composite parts

negative = reciprocal
denominator = root
numerator is power
Original post by Coerce
Ahhh I get that!

So you basically had to turn it to top heavy then square root the numericals involved (25/16) to 5/4 and cube it cause of the power 3/2!

Seems so simple! That is all I needed thank you very much!!

No problem

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