SOLUTION: How do i know if an albsolute value problem is 'and' or 'or'?? Example: absolute value of 9x is greater than or equal to 90. I know the answer. I just need to know if the solut

Algebra ->  Absolute-value -> SOLUTION: How do i know if an albsolute value problem is 'and' or 'or'?? Example: absolute value of 9x is greater than or equal to 90. I know the answer. I just need to know if the solut      Log On


   

Question 236537: How do i know if an albsolute value problem is 'and' or 'or'??
Example: absolute value of 9x is greater than or equal to 90. I know the answer. I just need to know if the solution is written in and or or. please hurry!!
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How do i know if an absolute value problem is 'and' or 'or'??
Example: absolute value of 9x is greater than or equal to 90.
I know the answer. I just need to know if the solution is written in and or or. please hurry!!
:
greater or equal is written: ">="; You can use upper case \ for absolutes
In your example
|9x| >= 90
Remove absolute and solve two equation
:
9x >= 90
Divide both sides by 9
x >= 10
and
9x <= -90; negative reverses the inequality sign
Divide both side 9
x <= -10
;
:
You have two solutions
x >= 10
x <=-10