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OpenStudy (anonymous):
-4(x+2)>3x+20 solve the write as interval. I need help writing this in interval
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OpenStudy (anonymous):
\[-4x-8>3x+20\]
\[12>7x\]
\[\frac{12}{7}>x\]
\[(-\infty, \frac{12}{7})\]
OpenStudy (anonymous):
okay thanks. for some reason i got -4>x
OpenStudy (amistre64):
-8 -20 = 12?
OpenStudy (amistre64):
-4 > x is correct
OpenStudy (anonymous):
it is lol okay thanks
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OpenStudy (amistre64):
if we spin that about so that the arrow head is pointing in the lesser direction:
x < -4 is an easier view of it
OpenStudy (anonymous):
if i write it in interval would i get -infinite, -4?
OpenStudy (amistre64):
(-inf, -4) would be the interval notation
OpenStudy (anonymous):
thanks
OpenStudy (amistre64):
consider the [ ] to be equal signs connectd by a bar
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OpenStudy (amistre64):
|dw:1338775661373:dw|
OpenStudy (amistre64):
|dw:1338775671486:dw|
OpenStudy (amistre64):
that way when something is "or equal to" you know what to use an equal sign connected with a bar
OpenStudy (anonymous):
okay
OpenStudy (amistre64):
lol, it just helps me remember the notation :)
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OpenStudy (anonymous):
good way to do things
OpenStudy (anonymous):
oops
smote by arithmetic again
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