SOLUTION: Hi I have been sick for school I missed school's lesson yesterday which it was regarding "Absolute Value" so i am having trouble understanding the homework. |4|+|-9| this is one

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Question 261567: Hi I have been sick for school I missed school's lesson yesterday which it was regarding "Absolute Value" so i am having trouble understanding the homework.
|4|+|-9|
this is one of many problems i have to solve..you think you can help me explain?
i also have "Addition and Subtractions"
(-18)-9=?
Multiplication n division
(-63)/(-7)=
and one more
Exponents and Radicals
(-2)8
Answer by Alan3354(30955) About Me  (Show Source):
You can put this solution on YOUR website!
|4|+|-9|
Absolute value is the magnitude, or the distance from zero and is always positive.
|-9| = 9
--> |4| + |-9| = 4+9 = 13
---------------------------
this is one of many problems i have to solve..you think you can help me explain?
i also have "Addition and Subtractions"
(-18)-9=?
-18-9 = -27
-------------
Multiplication n division
(-63)/(-7)
= (-1)*63/((-1)*7)
The -1's cancel
= 63/7
= 9
--------
and one more
Exponents and Radicals
(-2)8
If that's %28-2%29%5E8
= +256
An even power makes it positive.