Answer:
X=80
Step-by-step explanation:
I suppose the graph will be like this:
Since isosceles trapezoid, red lines are parallel.
X+x+20= 180
2x+20=180
2x=160
X=80
39/69 = 13/23 is in simplest form
First you do 39 divide by 3 = 13 and do 69 divid by 3 = 23
−5m(−2m6+4m4+m−9)
= 10m^7 - 20m^5 - 5m^2 + 45m