01-08-2020
Mathematics

contestada

Find the 20th term from the last term of the AP:3,8,13,..., 253.

Respuesta :

MathPhys MathPhys

01-08-2020

Answer:

158

Step-by-step explanation:

The sequence is 3, 8, 13, ..., 253.

Going backwards, it's 253, 248, 243, ..., 3.

First term is 253, common difference is -5.

The nth term is:

a = 253 − 5(n − 1)

The 20th term is:

a = 253 − 5(20 − 1)

a = 158

Answer Link

Otras preguntas

Darling your my best friend. But there's a few things you don't know..

When was the ottoman empire found and who found it

What would a wave with a low amplitude sound like? A It would sound quiet. B It would sound loud. C It would sound squeaky. D It would sound deep.

Match the items. a. Third person omniscient b. Third person observant limited c. First person 1. "He looked over the railing to spy." а 2. "I'll never be as sma

whats an expression equivalent to 12g - 3g +7

help me with this, I was never taught how to do this...

Which of these is a potential short-term consequence of gang involvement? A. Bad grades B. Enriching after-school activities C. Positive family relationships D.

Discuss how an appreciation for a work of art is created by personal taste; identify the qualities YOU personally attribute to a good work of art.

If Sarah subtracts five times her number from 24, she gets 4. Wha Sara's number?

4 Which one causes global warming A. carbon dioxide B. helium C. nitrogen D. oxygen