Ask a New Question

The sums of the first 8 terms and first 20 terms of an AP are 56 and 260 respectively; find the first term (a) and the common difference (d).

1 answer

8/2 (2a+7d) = 56
20/2 (2a+19d) = 260
...

Ask a New Question or answer this question.

Similar Questions

Which of the following best describes the expression 2a + 3b + 4c + 5d? (4 points)The product of four sums; there are four terms
1. 1 answer
Identify the terms as like or unlike terms.10xy, −15xy 10 𝑥 𝑦 , − 15 𝑥 𝑦 (1 point) Responses The terms are like
1. 1 answer
Identify the terms as like or unlike terms.10xy, −15xy (1 point) Responses The terms are like terms. The terms are like terms.
1. 1 answer
The sums of n terms of two arithmetic series are in ratio of 2n+1:2n-1. Find the ratio of their 10th terms.
1. 1 answer

more similar questions