am2esshawrianPal am2esshawrianPal

08-11-2016
Mathematics

contestada

What is the sum of the arithmetic sequence 6, 14, 22,
if there are 26 terms

Respuesta :

nobillionaireNobley nobillionaireNobley

12-11-2016

Sum of nth term of arithmetic sequence is given by Sn = n/2[2a + (n - 1)d]
Here, a = 6, n = 26 and d = 14 - 6 = 8
S26 = 26/2[2(6) + (26 - 1)8] = 13[12 + 25(8)] = 2,756

Answer Link

Otras preguntas

Belgrade and hungary became part of the ottoman empire during the reign of which leader? Constantine XI Mehmet II Suleyman I Osman I

8 3/4 pounds equals how many ounces?

1.01 as mixed number in simplest form

Esther starts at one corner of a square field and walks 90 feet along one side to another corner of the field. She turns 90° and walks 70 feet, and then walks s

What are the multiples of 12,7,5,18,14,8?? Please explain !!!

5x-8 (4x-7)=2 solve for x

Which of the following pictures shows the position of the earth, moon, and sun during a neap tide?

a stars mass determines ?

Name an organism that is composed of 99% water

a cookie recipe calls of 4 cups of flour to 3 cups of sugar. For each cup of flour that is used, how many cups of sugar are needed