Answer:
33a+9
Step-by-step explanation:
11a+10a+12a= 33a
7+3+9= 19
Answer: 33a+19
11a+7+10a+3+12a+9
Collect like terms.
(11a+10a+12a)+(7+3+9)
Simplify.
33a+19
No... I think it will be only 4 diagnols
A, it's the only one with a number greater then 1
0.35
Explanation:
<u>Follow the branch B and then branch D</u>