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Mathematics 10 Online
OpenStudy (anonymous):

Hiya! Would somebody be able to check my answer? The solution of -t/18 > 10 is t < - 180. True or false? I believe the answer to be True because the absolute value can never be negative. Would really appreciate the extra help. Thanks!

OpenStudy (anonymous):

OpenStudy (anonymous):

@dan815

OpenStudy (dan815):

This is not an absolute value question only when you see the 2 lines around it |....|

OpenStudy (dan815):

-t/18 > 10 you can solve this inequality if you multiply both sides by 18 it will still hold that the left side is greater than the right side -t/18 * 18 > 10*18 -t>180 now you can multiply both sides by -1 but if you multiply by -1 the greater than sign becomes less than sign t<-180

OpenStudy (dan815):

so its true

OpenStudy (dan815):

to understand why -1 flips the sign, take a look at another example

OpenStudy (dan815):

look at the number line, lets suppose there is some number b and some number a, and b is more than a

OpenStudy (dan815):

|dw:1435850978096:dw|

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