ki4rs5tewayrab ki4rs5tewayrab

06-07-2016
Mathematics

contestada

the first term of an arithmetic sequence is -2 and the fifteenth term is 68. what is the common difference of the sequence? 7 33/8 5

Respuesta :

06-07-2016

Hello,

Answer C : 5

[tex] u_{1}=-2\\ u_{2}=-2+r\\ u_{3}=-2+2r\\ u_{15}=-2+14r=68\\ [/tex]
==>14r-2=68
==>14r=70
==>r=5

Answer Link

Otras preguntas

Which of these represents a similarity between the Mayan and Aztec civilizations? A) both were polytheistic B) neither traded long distances C) they each disa

When Dimitri Mendelev first developed the periodic table, one of the most important features that he introduced was starting a new row at a certain point. What

Which expression best quantifies the proportion of asch's participants who conformed at least once in his classic study?

Match each type of savings account with its features

PLEASE HELP QUICK which statement best describes voting in the united states? A. More people vote in state elections than in federal elections B. Voting Turnou

name three types of particles found in an atom and explain how they differ

Answer the ones you know What ever question you answer make sure you say what one your answering :) Question 1. How many terms are in the expression? A. 4 B. 1

How can you make this meal healthier? Crispy Chicken Salad, Apple Slices, Bottle of water

Which of the following was a mistake made by General Douglas MacArthur in December 1941? He led a raid on Tokyo that proved to be only a minimal military gai

bought a set of 20 markers for 6 dollars how much would 1 market cost