Posted by victoria on Thursday, December 19, 2013 at 11:56am.
1. x + 8 <-28
a) x <-36
b) x <-20
c) x <20
d) x <36
2. p/8 > -5
a) p > 40
b) p > 3
c) p > -13
d) p > -40
3. -8x > -64
a) x < 8
b) x > 8
c) x <-72
d) x > 72
- math - Reiny, Thursday, December 19, 2013 at 12:07pm
Treat these as if they were equations but keeping the in-equality sign instead of the equal sign,
when you multiply or divide the in-equation by a negative, you must reverse the inequality sign.
-8x > -64
I would have to divide by -8 to get +x , so
x < 8
x + 8 < -28
x < -28 - 8 , I did not multiply/divide so no big deal
x < -36
you do #2, let me know what you get
- math - victoria, Thursday, December 19, 2013 at 12:15pm
- math - Reiny, Thursday, December 19, 2013 at 12:18pm
yes, but be more confident in your choice
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