Ask your own question, for FREE!
Mathematics 20 Online
OpenStudy (anonymous):

PLEASE HELP I WILL MEDAL AND FAN!

OpenStudy (anonymous):

Marcie solved the following inequality, and her work is shown below: −2(x − 5) − 12 ≤ 4 + 6(x + 3) −2x + 10 − 12 ≤ 4 + 6x + 18 −2x − 2 ≤ 6x + 22 −8x ≤ 24 x ≤ −3 What mistake did Marcie make in solving the inequality? She subtracted 6x from both sides when she should have added 2x. She added 2 to both sides when she should have subtracted 22. When dividing by −8, she did not change the ≤ to ≥. She did not make a mistake.

OpenStudy (anonymous):

I think she supposed to change the sign because i learnt that the sign should be changed when the x variable is negatice

OpenStudy (anonymous):

*negative

OpenStudy (anonymous):

ok.. mind if I get another opinion?

OpenStudy (anonymous):

@Hero do you agree with that? I think that iis the answer, but I'm just making sure.

hero (hero):

You can solve it for yourself to figure it out.

OpenStudy (anonymous):

yes but I am not sure what the correct answer would be, I am horrible at this stuff.

hero (hero):

Well, basically, any time you DO decide to divide an inequality by a negative number, you have to "flip the sign".

OpenStudy (anonymous):

so I was right?

hero (hero):

You never mentioned to me what you think the answer is.

OpenStudy (anonymous):

c

OpenStudy (anonymous):

@Hero

hero (hero):

C is correct.

OpenStudy (anonymous):

ok, thanks!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!