You are Here: Home

# Maths help?? Watch

Announcements
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

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: September 27, 2016
Today on TSR

### Fastest and slowest uni offer- senders

Who's top and bottom?

### Can I get into Oxbridge with just 9 GCSEs?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.