Yesssirbro Yesssirbro

20-03-2020
Mathematics

contestada

the 15th term of arthimetic sequence is 43 and the common difference is 4 find the first term

Respuesta :

ghanami ghanami

21-03-2020

Answer:

Step-by-step explanation:

hello :

the nth term of an arithmetic sequence is :

An =An+(n-p)d ....a common difference is : d

let : n=15 and p=1 d= 4 A15 =43

A15 = A1 + (15-1)(4)

43= A1 +56

A1= 43-56 = - 13

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