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Maths help??

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    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
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    (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.
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    (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!
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    (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 ?
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    (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
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    (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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