katibug9379 katibug9379

25-02-2018
Mathematics

contestada

What is the 30th term of the arithmetic series 4, 7, 10, …? 88 89?

Respuesta :

1kyokosakura1 1kyokosakura1

01-03-2018

a1 = 4; a2 = 7; a3 = 10
d = a2 - a1 -> d = 7 - 4 = 3
an = a1 + (n-1) d -> an = 4 + (n-1) * 3 = 4 + 3n - 3n + 1
[an = 3n + 1]
a30 = 3 * 30 + 1 = 90 + 1 = 91
Answer: a30 = 91

Answer Link

Otras preguntas

Who drove the Mongols out of Syria? the Chinese the Aksumites the Mamluks the Franks

charlie's eraser has a mass of 20 grams. How many milligrams are in 20 grams?

Which of the following people was one of Sigmund Freud s instructors and believed that hypnosis could cure hysteria? a. James Braid b. Josef Breuer c. Milton

Knowing Montressor s intentions towards Fortunato as we read The Cask of Amontillado provides the story with what literary element?

when did the invasion of Stalingrad happen

A motorist traveled 311 miles on 12 gallons of gas. To the nearest tenth, how many miles can the motorist travel on one gallon of gas?

What are common denominators

What is two thirds of 24

what are some waterways of Oregon

What best describes the role of government in a free enterprise system? a. Control 4 activities. b. Decide what companies will be formed and then allow the man