Question

find the sum to 10 terms of an ap whose first term is 10 and the last term is 100 answer fastly and properly

Answer 1

Step-by-step explanation:

10th term is 100

10+9b=100

9b=90,b=10

here b is the common difference

so sum of 10 term is

10/2(20+9.10)

5(20+90)=5.110=550

Answer 2

Answer:

your intro please

will you be my friend