Answer:
length=20 (Sorry if this is wrong)
Step-by-step explanation:
400÷20=20
I think its GI. Could be HJ too. Here's a little reminder about intersecting, parallel, and perpendicular lines...
(3, 62)
Since that second equation is equal to y, you can substitute the entire thing into the top equation, getting rid of the y and solving for x. It equals 3.
You can then plug 3 in for x on either equation, which should be 62.
