Answer:
x=6
Step-by-step explanation:
5x-4=3x+8
solve for x
2x=12
x=6
Can you please show us the excerpt? :)
since the triangles are similar
angle DEC = 60 degrees
3 angles inside a triangle equal 180 degrees
BAC = DCE = 64
CBA = EDC = 56
DEC = 180 -56 -64 = 60 degrees
used angle-angle theorem
It is enough to know all of the measures of the sides so its a
This is due to the formula involving three sides and one angle
