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

Both the title and epigraph of Nectar in a Sieve allude to _____.

A stock can go up, go down, or stay unchanged. How many possibilities are there if you own 6 stocks?

Which direct object pronoun best completes the following sentence? Notre grand-mère est très sympa. Elle ____ donne toujours des cadeaux. A) me B) vous C) no

what topic is not included in the study in the study of physical geology

You estimate that you can do 12 math problems in 45 minutes. How long should it take you to do 20 math problems?

If the acute angles in a right triangle are in the ratio of 5:4 find the measure of the smallest angle

Ben walks to college every day. While participating in a race, he observes that his breathing rate is ... than his breathing rate when he walks. He also notice

What is the product of 4.5 ⋅ 105 and 1.6 ⋅ 102? 6.1 ⋅ 107 7.2 ⋅ 107 6.1 ⋅ 1010 7.2 ⋅ 1010

In what year did the Texas Legislature attempt to restrict the ability of cities to regulate the size of lots?

What are the individual threads of a fungus called?