Answer:
1 
Step-by-step explanation:
Add the numerators and keep the same denominator.
18/20 + 12/20 = 30/20
30/20 = 1 
Answer:
n is the variable
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
.553 has the most number of significant digits
Answer:
35 degrees is your answer