ananduus143 ananduus143

02-07-2021
Mathematics

contestada

sum of first n terms of an ap sequance is 3n2+5n.what is the sum of its first n+1 terms.find the sum of its first 10 terms.

Respuesta :

loconte loconte

02-07-2021

Answer:

a) 3n^2 + 11n + 8

b) 350

Step-by-step explanation:

10) 3(10^2)+ 5*10 = 350

n+1) 3(n+1)^2 + 5(n+1)

3(n^2 + 2n + 1) + 5n+5

3n^2 + 6n+3 + 5n + 5

3n^2 + 11n + 8

Answer Link

Otras preguntas

can i have some help

give me the awnseer to how long is steve harveys mustache mixed with dr.phils mustache

What’s the equation?

tcoleman3rd here is your pounts

Find the slope between the following two points: (3, 1), (5, 4).

Tout le monde ___________________ les livres à la fin de l’année. (rendre)

Which of the following are examples of being open to learning new things? i. listening to different points of view ii. listening to an argument, even if you dis

A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associate is $800 and the daily rate f

Give the standard form for 900,000 + 50,000 + 9,000 + 600 +20+7

A news reporter is unhappy with her assigned story. She visits a baseball game, and asks the player questions that cause him to get flustered. Back at the studi