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

The cafeteria at midtown middle school surveyed 575 students about their favorite food. Find the number of students the responded for each of the following.

a doggie day care charges $21.50 per day. If you leave your dog 5 days a week the discount is 20%. what is the cost of leaving your dog for 5 days in a week ?

After the colonists won independence from Britain, what was their main concern?.

how do you solve 3x-2y=-5 ; 3y-4x=8 for x and y. Explain please.

Russians call their spacemen ______. Astronauts Cosmonauts Communauts Aeronuts

How do you use the guess and check method to solve mathematical sentences

Which freedom did the attorney general of the United States violate during the Red Scare? A. freedom to vote B. freedom of speech C. freedom of religion D. free

what type of rain contains more acid than normal rain?

Under feudalism, which group was responsible for ruling different regions of a country? peasants knights lords king

What is the word family of the word "diverge"? Can you give me a sentence to use it in? Also what is the origin