The sum of the first 48 terms of an arithmetic series is 4 times the sum of the first 36 terms of the same series. Find the sum of the first 30 terms of this series.

Q: Find the sum of the first eight terms of the sequence 18, -14, 12

A:

Q: Find the sum of the first 4,000 odd numbers.

A: Sum of first 4000 odd numbers can be calculated by using AP as follows                AP   1,…

Q: Find the sum of the first ten terms of the arithmetic series A1=7, d=-3

A:

Q: Find the sum of the first 109 terms in the sequence with a1=-3 and d=5.

A: Given  First term a1=−3 Common difference d=5 number of terms n=109

Q: find the sum of the first 25 terms of an arithmetic series if t12=-26 and t22=-46

A: We need to find the sum of first 25 terms of an Arithmetic series. We have t12=-26   and   t22=-46

Q: Find the sum of the infinite geometric series.

A: To find: The sum of the infinite series ∑i=1∞12-0.7i-1. Concept used: The sum of infinite geometric…

Q: Find the sum of the series.

A: The series is:

Q: A music producer is making a list of vocalists needed to record an album. For each day of recording,…

A: Let a1 be the first  day a1=8next day the number of vocalists needed…

Q: 72-1 b) En=1an for an 5. )** 00 %3D

A: