STEP ONE Okay first you want to make sure that your shoe lace is undone.
STEP TWO Then your gonna wanna cross the two shoe laces over so it looks like an x
STEP THREE Then you will want to pull on both end so its tight.
STEP FOUR Next your gonna wanna make one hoop so it kinda looks like a bunny ear but leave one lace undone.
STEP FIVE After you have made a hoop and left one lace undone you are going to want to wrap the lace that you had undone around the hoop.
STEP SIX After you have wrapped the undone lace around the hoop your gonna want to put it threw the little opening you are going to make with the undone lace and pull it threw so it looks like you have to loops.
STEP SEVEN Now you know how to tie your shoes :)
....and yes I did type that all out because I felt like it
The actions are that some people will or may not pay forthe gas if it costs that much!
1) x=9, because we can use the Pythagorean theorem, x^2 + 144 = 225, x^2 = 81
2) 
, because 6^2 +6^2 = 72, 
3) 
, because 
hope this helps... load for images!
