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

find the circumference of a circle whose radius is 15.4cm
In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times
find the circumference of a circle whose radius is 15.4cm
find the circumference of a circle whose radius is 15.4cm
jasmines cd collection is 3/8 jazz 1/4 rap and the rest is rock music what is the fraction of rock music
In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times
What value of x makes the equation true ? 4(2x-4)=16
jasmines cd collection is 3/8 jazz 1/4 rap and the rest is rock music what is the fraction of rock music
What value of x makes the equation true ? 4(2x-4)=16
In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times