Question

The sum of first 10 terms of an arithmetic sequence is 120 and the sum of first 12 terms

is 168 .

a) What is the sum of 11th and 12th terms of this sequence ?

b) What is the sum of first 22 terms of this sequence ?

c) If the 22nd term is 45 , what is its 11th term ?

d) What is is first term ?​

Answer 1

Answer:

i do not understand your question

Step-by-step explanation:

sorry

Answer 2

Answer:

Hope the full solution is clear and it will be helpful ☺️