All the angles of a triangle add up to 180 degrees.
30+39+<4= 180
69+<4= 180
Subtract 69 on both sides.
<4= 111 degrees
<1 and <4 are supplementary and adjacent. They equal 180 degrees as well.
111+<1= 180
<1= 69 degrees
I hope this helps!
<em>~kaikers</em>
3/5 cannot be simplified into a smaller fraction.
Answer:

Step-by-step explanation:





Answer:
3-11n>21-5n
Step-by-step explanation:
It seems right, so hopefully it is.