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# Maths help??

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1. I've tried to attempt this maths question I'm now not sure if it is right.
(Sqrt49)X1/2^-3
I thought it was 7/8 but I just need consolidation and the same for the question below.
(Cube root 8)x4/9^-3/2
Which I thought was 27/8 if these are wrong can u pls describe how to do it but don't give the answer ? Many thanks
2. (Original post by Snowystar)
I've tried to attempt this maths question I'm now not sure if it is right.
(Sqrt49)X1/2^-3
I thought it was 7/8 but I just need consolidation and the same for the question below.
(Cube root 8)x4/9^-3/2
Which I thought was 27/8 if these are wrong can u pls describe how to do it but don't give the answer ? Many thanks
For the first one try it again paying attention to the negative power. For the second one you seem to have forgotten about the cube root 8 in the front.
3. (Original post by sindyscape62)
For the first one try it again paying attention to the negative power. For the second one you seem to have forgotten about the cube root 8 in the front.
Thank you so much for pointing out my errors I though my answers were a bit strange!
4. (Original post by Snowystar)
Thank you so much for pointing out my errors I though my answers were a bit strange!
Oh wait I still don't understand the second one I done the cube root of 8 to get 2 then done 4/9^-3/2 to get 27/8. What do I do after that ?
5. (Original post by Snowystar)
Oh wait I still don't understand the second one I done the cube root of 8 to get 2 then done 4/9^-3/2 to get 27/8. What do I do after that ?
Just multiply 2 and 27/8 together. You've done the hard bit
6. (Original post by sindyscape62)
Just multiply 2 and 27/8 together. You've done the hard bit
Oh right, that's embarrassing lol

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