Math, asked by athulsathul29, 7 months ago

the sum of first 21 terms of an arthimrtic sequence is 735.find its 11th term

Answers

Answered by neerajareddykorru

0

Answer:

35

Step-by-step explanation:

The formula is n/2(2a+(n-1)d)

735=21/2(2a+(20d))

By solving this equation we get

70=2a+20d,dividing this by 2

We get,

35=a+10d

a+10d is 11th term

So the answer is 35

Previous Question

Next Question

Similar questions

History, 3 months ago

Gawain sa Pagkatuto Bilang 5: Tukuyin ang mga pangunahing ilog sa mapa na may malaking ambag sa paglago ng kabihasnang Sumer, Indus at Shang. Isulat ang iyong sagot sa iyong sagutang papel. 3. 1. 2. 5. 4. Pagkatuto Bilang 6: Itala ang mga impormasyong pagkakatulad at min ito sa iyong...

English, 3 months ago

the life time of van gogh was ..?

Social Sciences, 3 months ago

How many countries signed the UN Charter in 1945?

Sociology, 7 months ago

importance of teacher ...

Computer Science, 7 months ago

The following code should take a number as input, multiply it by 8, and print the result. In line 2 of the code below, the * symbol represents multiplication. Fix the errors so that the code works correctly: input ("Enter a number: ") print (num * 8)...

English, 11 months ago

"What makes you happy " in passive vioce...

History, 11 months ago

What is Motto of Bharatiya Government.

Environmental Sciences, 11 months ago

Write a report on your ubuntu project (5 pages) to make every day a mandela day by naming the organisation,institution or project that you will support.Include their address and or website...