Ok I did some work on this and I got 10.071 and we rounded this to the nearest 10 we would get 10
Tell me if this right
Step-by-step explanation:
Given the Arithmetic sequence

An arithmetic sequence has a constant difference d and is defined by







as


∵ 





∵ 

∵ 
Therefore, the indicated nth partial sum of the arithmetic sequence is 1530.
ANOTHER METHOD
as

n = 30




as

and

so


Answer:
16 feet and 8 inches
Step-by-step explanation:
Multipy 3 feet 4 in by 5:
15 feet and 20 inches
Convert 20 inches to feet
1 foot 8 in
Add to 15 feet
16 feet and 8 inches
Answer:The answer is 25 blocks
Step-by-step explanation: This is because if 17 and -8 are subtracted, you get 25.
Answer:
Answer to A would be 147872265.5 km squared.
I don't really have enough information to get B and C. But i can help. To get the people per kilometer, you divide the number of people by 147872265.5. And you can do the same for ants. Then for C. you divide the number of ants by the number of people. Hope this helps!