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Mathematics 18 Online
OpenStudy (keenan):

abs of -2x+8>=1

OpenStudy (anonymous):

x>=7/2

OpenStudy (keenan):

its two answers to it

OpenStudy (anonymous):

yeah hold on

OpenStudy (anonymous):

X>=-7/2 X<=7/2

OpenStudy (anonymous):

check work to make sure

OpenStudy (keenan):

jason i got something different

OpenStudy (anonymous):

A clarification: Isn't absolute value always positive?

OpenStudy (keenan):

yes

OpenStudy (anonymous):

http://www.purplemath.com/modules/absolute.htm

OpenStudy (anonymous):

ok let me see hmmm...thinking

OpenStudy (anonymous):

\[|-2x+8|\geq 1\]

OpenStudy (anonymous):

\[|-2x+8|\geq 1\]

OpenStudy (keenan):

yeah can you help me

OpenStudy (anonymous):

\[|2x-8|\geq 1\]

OpenStudy (anonymous):

\[2x-8 \geq 1\] or \[2x-8 \leq -1\]

OpenStudy (keenan):

yes need both answers

OpenStudy (anonymous):

first one gives \[2x\geq 9\] \[x\geq\frac{9}{2}\]

OpenStudy (anonymous):

second one gives \[2x \leq 7\] \[x \leq \frac{7}{2}\]

OpenStudy (keenan):

can you help me with 3 more problems

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