Answer:
ok
Step-by-step explanation:
Answer:
69.75 square inches
Step-by-step explanation:
Add the top and bottom lengths then divide by 2 before multiplying it with the height
1/2x(3+12.5)=7.75
7.75x9=69.75
Answer:
:/
Step-by-step explanation:
Answer:
- 85
Step-by-step explanation:
The n th term of a geometric series is
= a
where a is the first term and r the common ratio
1
← is the n th term of a geometric series
with a = 1 and r = - 2
The sum to n terms of a geometric series is
= 
= 
= 
= 
= - 85
Answer:
572
Step-by-step explanation:
Work :