samiromero2005 samiromero2005

02-05-2022
Mathematics

contestada

Write a rule for the nth term of the sequence. Then find a20. Assume the first termis a₁. 86, 79, 72, 65…

Respuesta :

khuonglu1999 khuonglu1999

02-05-2022

Answer:

an = a(n-1) - 7

Step-by-step explanation:

the second term is smaller than the first term 7.

a20 = a19 - 7

a19 = a18 - 7

=> a20 = (a18 - 7) - 7

Then you can accumalate until a1

-> a20 = a1 - 19*7 = 86 - 19*7 = -47

Answer Link

Otras preguntas

n economic language, a shortage is best defined as __________. A. a situation in which the demand for a good or service is greater than the amount supplied in

4^3 * 4^4 = A) 4^-1 B) 4^1 C) 4^7 D) 4^12

6x-5y= 0 4×-5y = -10

Ripped or torn,contamination, starting a new task these are all situations when an employee must

A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100. Using the eight‐part symmetry o

speech on the topic of "fresh air, healthy life".

What country is the evil empire ?

What's the surface area?

Which type of organism converts wastes and dead materials into nutrients that can be used by plants

Which of the following is not a term used to describe exercise that helps the heart work better?