nikhilpun36 nikhilpun36
  • 02-06-2021
  • Business
contestada

the sum of a and 3a is​

Respuesta :

mahraalirashid mahraalirashid
  • 02-06-2021

Answer:

Given,

3a,a,_a.......a terms

Sn=n/2[2(a)+(n-1)d]

Sa=a/2(6a-2a+1)

Sa=a/2(2(2a+1)

Sa=a(2a+1)

Sa=2a^2+a

Explanation:

Answer Link

Otras preguntas

What is the value of f(-4) in the piecewise function f(x)= -x-5 for -5<= x <= -2; -x^2+1 for -2<=x<=2; (x-3)^2+2 for 2<=x<=4? If that makes an
Why is India considered a subcontinent
what are some physical changes that occur at school? at home ? in nature ?
if x = -3 calculate the value of: x3 + x
how do you say 'im getting over you' in spanish
why is water so important in metabolism
The crew on fishing boat caught four fish weighing a total of 1092 pounds. The tarpon weighed twice as much as the amberjack and the white marlin weighed twice
Is 4xy + 2y = 9 linear ? If yes write the equation in standard form & determine the x & y interests
Ramiro is 3/10 as tall as the flagpole. The flagpole is 5/9 as tall as the nearby tree. The tree is 32 2/5 feet tall. How tall is Ramiro?
what is the main functions of lipids?