Answer:
38
Step-by-step explanation:
AB is parallel to CD. So, <ABC = <BCD.
Now, <BCD = <ABC = 180 - 111 - 31 = 38
Answer:
89 sq meters
Step-by-step explanation:
The whole rectangle 13x8 = 104
Now subtract the white triangle
(6x5)/2 = 15
104-15 = 89
You are looking for the perimeter, so you need to add 11+11+7+7. That equals 36.
If you have |a|=b, solve a=b and a=-b
so
|-4+5x|=16
so solve
-4+5x=16 and -4+5x=-16
add 4 to both sides
5x=20 and 5x=-12
divide both sides by 5
x=4 and x=-12/5
the 2 solutions are x=-12/5 and x=4
