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

help on absolute value!

3.99 4.29 and 2.89 range

The first detailed study of magpie attacks in Australia indicates that by the time they had reached adulthood, 98% of men and 75% of women born in the country h

A computer was on for 2/3 of the original price. If the original price was $900 what was the sale price

printing press definition

Read this excerpt from The Outsiders. I’m different that way. I mean, my second-oldest brother, Soda, who is sixteen-going-on-seventeen, never cracks a book at

-1.023 + 5.6 (show how you got the answer)

Evaluate 3(x+4)(x+1)/(x+2)(x-2) if x = 4 a.-10 B.10/3 C.-10/3 D.10

An unknown substance is measured. It has a mass of 0.221 g and a volume of 2.25 mL. What is its density?

Select the correct text in the passage. Which word uses the detail of touch as an example of sensory language in the paragraph? A BRIGHT light filtered into the