Question

See attachment

Answer 1

The equal spacing on both sides of the trapezoid indicate the crossing segment is halfway up the trapezoid. That indicates its length is (44-10)/2=17. Further, that indicates x=9.

Answer 2

Work the above problem backwards to get solution for x in number twenty.

Answer 3

YES, thank you so much!

Answer 4

You have no idea how long I've been waiting for someone to answer this question :P

Answer 5

In particular, number twenty works out something like\[\frac{2x+10x+3.2}{2}=17.1\implies 10x=31\implies x=\frac{31}{10}\]

Answer 6

No sweat.

Answer 7

Do you understand it now?

Answer 8

Yes, I do