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Mathematics 11 Online
OpenStudy (anonymous):

Solve the inequality. 42 < –6d A. d < –7 B. d < 36 C. d > –7 D. d < –48

OpenStudy (jhannybean):

When dividing by a negative integer the sign flips. What is 42/-6?

OpenStudy (anonymous):

I don't understand why I'm dividing

OpenStudy (jhannybean):

you're trying to isolate d on one side to solve for it.

OpenStudy (jhannybean):

"d" is represented as a number that is multiplied by -6. In this problem we are trying to find a number "d" that is multiplied to -6 that is less than 42.

OpenStudy (jhannybean):

Purplemath can help you understand what inequalities are as well :) http://www.purplemath.com/modules/ineqsolv.htm

OpenStudy (anonymous):

thanks!

OpenStudy (jhannybean):

No problem :D

OpenStudy (anonymous):

so would d> -7 be the answer

OpenStudy (jhannybean):

You got it :D

OpenStudy (anonymous):

alright!

OpenStudy (jhannybean):

Good job :)

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