The answers are B and D hope this helps.
Answer:
180-140=50 180-90-50= 40 m=40
Answer: 7 4/9
Step-by-step explanation:
Find least common denominator of 3 and 9, which is 9. So, 11 1/9 - 3 6/9 = 7 4/9
Answer:
Option E
Step-by-step explanation:
Explicit formula of a geometric sequence is,

Here,
First term
common ratio
number of terms
If,
and 
Common ratio of the sequence 


By substituting these values in the formula,

Therefore, Option E is the answer.