answersLogoWhite

0

To find the sum of the first 20 terms of an arithmetic progression (AP), we need to first determine the common difference (d) between the terms. Given that the 6th term is 35 and the 13th term is 70, we can calculate d by subtracting the 6th term from the 13th term and dividing by the number of terms between them: (70 - 35) / (13 - 6) = 5. The formula to find the sum of the first n terms of an AP is Sn = n/2 [2a + (n-1)d], where a is the first term. Plugging in the values for a (the 1st term), d (common difference), and n (20 terms), we can calculate the sum of the first 20 terms.

User Avatar

ProfBot

2mo ago

What else can I help you with?

Related Questions

What was abolished under the constitution?

slavery and prohibition, respectively the 13th and 21st amendments


What is the 13th largest state by area?

Arizona is the 13th largest state in terms of area in the United States.


What does Net 13th 23rd prox 3rd 13th subsequent?

"Net 13th 23rd prox 3rd 13th subsequent" typically refers to payment terms, indicating a net payment due on the 13th or 23rd of the month following the transaction, with a 3rd and 13th subsequent payment schedule. Essentially, it means that payments should be made within a specified timeframe after the invoice date, allowing for a grace period for processing. It's important to clarify the exact meaning with the concerned parties, as such terms can vary in interpretation.


What is the 13th hour of the day?

1pm The first hour is zero hundred in military time and midnight to 1 AM on a 12-hour clock. So, the second would be one hundred hours and 1 AM to 2 AM, respectively. If we continue this, then the 13th hour of the day is noon to 1 PM (also denoted twelve hundred to thirteen hundred hours, but it's the same thing in both). That makes the 13th hour 12 PM, not 1 PM.


Where did Friday the 13th first begin?

The first movie came out in 1980


What movie was made first Halloween or Friday the 13th?

Friday the 13th has 12 movies to the franchise, and Halloween has 10 movies to the franchise; including the two remakes. So, Friday the 13th has the most movies of the two.


When were mosaics first made?

in the 12 -13th century


What was the scarest Friday the 13th movie?

The first one.


Is Delaware is the 13th state?

No, it's the first state.


Why is Taylor swifts lucky number?

Her birthday is the 13th, she turned 13 on Friday the 13th, her first album went gold in 13 weeks, her first song has a 13 second intro, and every time she has won an award, she has been seated in the 13th seat, the 13th row, or the 13th section. She talked about it in an interview, pretty amazing if I do say so myself c:


When and where were first olympic was held?

the first olpimeccj were held in london 13th october


Why did Friday 13th start?

i your talking about the horror movie series, Friday the 13th, the original first film with Betsy palmer as pamela, the first film was made in 1980.