Question

Make n, l the subject of the formula 9" id="TexFormula1" title="s = \frac{n}{2} (a + l)" alt="s = \frac{n}{2} (a + l)" align="absmiddle" class="latex-formula">
​

Answer 1

Answer:

$n = \frac{2s}{(a + l)}$

step by step explanation is attached to the picture.

hope this helps

brainliest appreciated

good luck!have a nice day!

Answer 2

Answer:$S = \frac{n}{2} (a+l)\\2s = n(a+l)\\2s = na +nl\\\frac{2s}{a+l} = n+n\\2n = \frac{2s}{a+l}\\n = (\frac{2s}{a+l})/2\\n = \frac{2s}{2a+2l}$

Step-by-step explanation:

To Make n  subject  of the formula

Step 1 : Cross multiply

Step 2 :Use n to open the bracket  

Step 3 : Divide both sides by a +l to make n on one side of the equation

Step 4 :Evaluate n+n = 2n

Divide both sides of the equation by 2

To make l the subject of the formula ,

Step 1 : cross multiply

Step 2 :Use n to open the bracket

Step 3 : Move na to the other side of the equation to isolate l

Step 4 : Divide both sides of the equation by n ​

$S = \frac{n}{2} (a+l)\\2s = n(a+l)\\2s = na +nl\\\\2s - na = nl\\l = \frac{2s-na}{n}$