Answer:
1.) x=4
2.) x=14
Step-by-step explanation:
FOR #1:
1.) In order to solve the parallelogram, you must know that each opposite sides must equal...
so KL=JM and KJ=LM
2.) To solve for "x", you must substitute

so it should end up with...

3.) Solve the equation with some algebra

FOR #2:
1.) In order for a square, rectangle, parallelogram, (or any shape with four sides), it must equal to 360°. And you just have two given angles, which equal to 180, so that means the unknown equals to 180...So in this case you should have

as your equation...
2.) Solve with algebra


<u><em>multiplied</em></u>
Step-by-step explanation:
I think this might be correct you can see for yourself if you think this is good
solution: 5 packs
let a be plates and b be packs
100a = 5b
= (20*5)a
sorry if confusing I'll say it here
packs is 20 plates and you need 100 plates
just divide the plates you need (100) and the plates per pack (20) and that's how many packs you need to get(5)