+0  
 
+5
373
2
avatar
-5/2x>30
Guest Jan 30, 2012
Sort: 

2+0 Answers

 #1
avatar
0
what is the answer to -5/2x>30?
Guest Jan 30, 2012
 #2
avatar+3065 
0
Quote:

what is the answer to -5/2x>30?



-5/2x > 30

-5/2x results in a problem at x=0:
so let's see the plot:
[input]plot( -5/(2x) , 30, x= -1..1, -10..40 )[/input]

as you can see, for all x>0 the result of -5/2x will be less than zero.

for x < 0:

-5/(2x)
x in the denominator, so try the reciprocal value: (switch > to <)

-5/2x > 30 | reciprocal
(2x)/-5 < 1/30
(2x) < -5/30 |*(-5)
x > -5/60 |/2
x > -1/12

so the result is: -1/12 < x < 0
admin  Jan 30, 2012

6 Online Users

avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details