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absolute value
Okay, so we were reviewing absolute value in class on friday, and I know the basics and everything. However, there is one thing that I'm stuck on.
I know that |-9| = |9| (positive 9).
But, on our homework, we have to add the opposites..
|4-10| (which turns into 4 + -10)
|4 + -10|
My question is, would you turn -10 into a positive so that you would end up with |4 + 10| = |14|, or would you keep it negative, so when you get..:
|4 + -10| = -6, then -6 would turn positive.
See what I'm saying? Sorry if I'm making this more complicated than it seems, but I'm really stuck on this, and I need to get my Algebra review homework done.
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It goes by the rule of:
Please Excuse My Dear Aunt Sally
Paranthesis, Exponent, Mult/Divide, Add/Subtract
In order, that is.
So, think of the absolute value things as a paranthesis. You'd do what's inside FIRST. Then when you get that answer and you've simplified as much as you can inside the absolute value, THEN you think about doing the make it positive thing.
So, it'd be..
|4+ -10|=
|-6|=
6
=)
]
No, not:
|4 + -10|
= |4 + 10|
= |14|
= 14
First finish the equation inside. After you get a single digit with a sign or without you can decide what to do.
|4 + -10|
= |-6|
= 6
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