3 years ago

what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?

Mathematics

1 answer:

max2010maxim [7]3 years ago

7 0

Answer:

900

Step-by-step explanation:

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what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?​

what is the sum of the first 25 terms of an arithematic sequence if the sum of its 8th and 18th terms is 72?