Question

PLEASE HELLPP
Solve P=2(l+w) for I.
Fill out this chart.
P= 14 w=2 I=?
P= 22 w=8 I=?

Answer 1

Step 1: Expand the brackets on the right hand side.
Step 2: Get all I terms on one side of the equals sign, everything else on the other side.
Step 3: Get I on its own by division (will be by 2).
Can you do these steps?

Answer 2

ok so first I would use the distributive property for 2(l+w) ? so it would be 2l+2w?

Answer 3

Yep that's Step 1 completed, now see if you can do steps 2 and 3 :)

Answer 4

thanks!

Answer 5

Let me know what you get and I'll tell you if you're correct.

Answer 6

I got: p-2w/2

Answer 7

Well done, make sure you include the brackets though:
\[l=\frac{(p-2w)}{2}\]
Now all you need to do is substitute the values you're given into that :)

Answer 8

oh ok thank you so much! (:

Answer 9

No problem at all :)