Wafiandfamily Wafiandfamily

25-06-2020
Mathematics

contestada

If the nth term of a number sequence is n squared+2n find the first 3 terms and the 10th term

Respuesta :

PollyP52 PollyP52

26-06-2020

Answer:

First 3 terms are 3, 8, 15.

10th term = 120.

Step-by-step explanation:

an = n^2 + 2n

a1 = 1^2 + 2*1 = 3

a2 = 2^2 + 2*2 = 8

a3 = 3^2 + 2*3 = 15.

a10 = 10^2 + 20 = 120.

Answer Link

Otras preguntas

How can obtaining a doctorate impact your contribution to the practices of information technology?

-3 17/20 as a decimal

The outermost region of our Solar System is called the Oort Cloud Select one: True False

Given two objects that weigh the same on earth but with different densities, how is their weight ratio in a vacuum?

-4y-4+(-3) what is my answer?

f(x)=x^2−x−1 Over which interval does f have an average rate of change of zero? Choose 1 answer: (Choice A) 2≤x≤3 (Choice B) −5≤x≤5 (Choice C) 2−1≤x≤2 (Choice D

Joanne had $115 to spend at the mall. She spent 23% of that money on a shirt. Joanne spent $___ on the shirt

An acid is a solution with pH between (most acidic) ________ and less acidic _________.

Help me with english please

An essential nutrient is one that a) bacteria need for proper growth and can make themselves.b) bacteria need for proper growth and cannot make themselves.c) is