Since they are all paralell
1=4=5=8=9=12
2=3=6=7=11=10
2=129=
since that is a straignth line
2+4=180
4=12
2+12=180
subsitue
129+12=180
subtract 129 from both sdies
12=51
the answer is A 51
Answer:
1/2 is slope
Step-by-step explanation:
Answer:4+10i
Step-by-step explanation:
6+15i-2-5i
4+10i