What is the value of the expression |x + y| when x = –7 and y = 18

Question

whpalmer4 · Answer

|something| is just if is greater than or equal to 0. Otherwise, it's -. |-3| = 3 |2| = 2 etc. |x+y| = |-7 + 18| = |18-7| =

anonymous · Answer

really all i want to know is what do those brackets mean

whpalmer4 · Answer

that's the absolute value function.  |x| = x if x >= 0
|x| = -x if x < 0

anonymous · Answer

|25|. The brackets mean the absolute value. So if x=-7, the absolute value would be 7

anonymous · Answer

Just plug in -7 to the equation and 18.  The brackets just mean to solve what is inside of them.  So your equation should be [-7+18]
Which should be 11

whpalmer4 · Answer

evaluate the expression between the vertical bars.  if it is negative, change the sign to make it positive.  done.

whpalmer4 · Answer

@loveurself_5 no, do not confuse [] and || they are not brackets, but vertical lines

anonymous · Answer

|x+y|
|18-7|
|11|
=11

anonymous · Answer

0_o wow thanks