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Mathematics 15 Online
OpenStudy (anonymous):

solve 3n+11<17 or -3n>12. which is the best description of the solution set? A. n < 2 or n > -4 B. n < 2 or n < -4 C. n < 2 D. n < -4

OpenStudy (anonymous):

Just solve for n in both inequality: -3n>12 (divide by -3 on both sides, NOTE: if you divide by a negative number you reverse the inequality symbol) So n<4 Can you solve for 'n' in the other inequality?

OpenStudy (anonymous):

Sorry i meant n<-4

OpenStudy (anonymous):

okay umm so the second one isn<2?

OpenStudy (anonymous):

Good so now we have: n<2 or n<-4. Note that n<2 solutions also covers the solutions for n<-4. So we can write this as a single inequality.

OpenStudy (anonymous):

wait im all confused!!!

OpenStudy (anonymous):

but last time i put that i go tit wrong

OpenStudy (anonymous):

I am not finished. A solution for n<2 is -5 right. A solution for n<-4 is -5 right. So we can write it as a single inequality because the inequality symbols are the same: Answer would be n<2, which also includes all the solutions for n<-4

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

Do you understand? I can draw you a diagram if u r still confused

OpenStudy (anonymous):

i guess that wold be a little helpful....so the answer would be c?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

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OpenStudy (anonymous):

is this helpful?

OpenStudy (anonymous):

yea it is thanks for the help:)

OpenStudy (anonymous):

Sure no problem.

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