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# Could anyone check whether these rearranged formulae are correcr watch

1. Hi, could anyone check whether these rearranged formulae are correct (rearranged for x btw). Thanks
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2. I have realised that I20 is cut off at the bottom, sorry.
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3. For the second document (in your first post), check the fourth line and last line.
4. (Original post by simon0)
For the second document (in your first post), check the fourth line and last line.
I wasn't quite sure how to cross multiply the T, should it be on the left of the square root?
5. (Original post by etel)
I wasn't quite sure how to cross multiply the T, should it be on the left of the square root?
Sort of yes, multiply both sides by "t", as an example:

6. (Original post by simon0)
Sort of yes, multiply both sides by "t", as an example:

Ah okay, if there wasn't a sqrt then would it be
Thanks
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7. The first one:

As an example:

8. (Original post by simon0)
The first one:

As an example:

Ah okay thanksss

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