In order to solve the following system of equations by addition, which of the following could you do before adding the equations so that one variable will be eliminated when you add them ? 3x -6y = -15 -2x + 5y = 14 a. multiply the top equation by 2 and the bottom one by 3. b. multiply the top equation by -3 and the bottom one by 2. c. multiply the top equation by 2. d. multiply the bottoms equation by 6.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

answer: 5100 just subtract

step-by-step explanation: