Because the ratio of a 45,45,90 triangle is 1:1: square root 2, x=4.
:)
Http://www.madeiracityschools.org/userfiles/376/Classes/17052/Review%20Worksheet%20Unit%209%20Quiz%2...
I would use this website. Hope it helps!
Substitute the value for y as 450
450=-5x+1
Solve for x
450-1=-5x
449=-5x
89.8=-x
x=-89.8
I believe since ABD is 60, DBC is also 60 and then ABC is 120
I believe the answer would be
A,C and maybe D hope this helps