Answer:
x=18
Step-by-step explanation:
Vertical angles are congruent. This means that they are equal to each other. So, to solve set them equal to each other and isolate x. First, set up the equation. Then, subtract x from both sides. Finally, add 11 to both sides and simplify.
1) 
2) 
3)
Answer:
1203/100
Step-by-step explanation:
12 times 100 equals 1200 plus three equals 1203/100
the number is 6 so we round up to 9.7 s
I hope that help .