The answer is option c
I hope this helps!
Notice this is a geometric progression since each number multiplied by some factor equals the next number in the sequence, in this case,

Then by applying the formula for sum to infinity of a geometric progression,
Answer:
x=10
Step-by-step explanation:
the angle is 90 degrees
90-29=61
61-1=60
60÷6=5
x=10
have a good day
85/11.9 whatever that works out to
Its 25 for the second one