centre of mass

[upbeat thunder]

The answer key has done $\frac{25ak}{2}-\frac{9ak}{8}$

[untold elbow]

zen

[worn void]

1. Ask your question and show the work you've done so far. If you've posted a screenshot of a question, specify which part you need help with.
2. Wait patiently for a helper to come along.
3. Once someone helps you, say thank you and close the thread with:

   +close
   

4. Feel free to nominate the person for helper of the week in #helper-nominations
5. Do not ping the mods, unless someone is breaking the rules. If there is a conflict amongst multiple helpers feel free to ping “Helper Mod”
6. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[upbeat thunder]

this is what ive done

[still shell]

@upbeat thunder

<:HelpIcon:1304095958283321385>| Help Reminder

Hello zen063, this is a friendly reminder that your thread has been inactive for more than 24 hours. If you no longer need assistance, please consider closing the thread using the +close command.

[upbeat thunder]

+close

[still shell]

Do you still want to close your help request?

No eligible helpers were found in this thread. You can still close this post if you don't require helper any longer.