Can soeone pleaseee help with with 10 questions on my review???
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OpenStudy (anonymous):
Which expresses the given inequality in interval notation?
x < 4
(Points : 4)
Option A: x E(4,infinity)
Option B: x E [4, infinity)
Option C: x E(-infinity,4)
Option D: x E (-infinity , 4]
I think the answer is C
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OpenStudy (anonymous):
Which is the solution set to the given inequality?
2x +6 < 8
a. x E(-infinity,1]
B. x E (1, infinity)
C. x E [ 1, infinity]
D. x E (-infinity, 1)
im not sure about this one
OpenStudy (anonymous):
@TheSmartOne
OpenStudy (mathmath333):
first simplify it
OpenStudy (anonymous):
x<1
TheSmartOne (thesmartone):
So what do you think it is now?
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OpenStudy (anonymous):
A or D
OpenStudy (mathmath333):
\[\infty <x<1\]
it is same as this
OpenStudy (mathmath333):
sry -\infinity will be there
OpenStudy (anonymous):
so its D?
OpenStudy (mathmath333):
\(-\infty <x<1\)
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OpenStudy (mathmath333):
yes
OpenStudy (anonymous):
:) cool next one
for this one I think its D
TheSmartOne (thesmartone):
Add the y and just subtract the 4..
TheSmartOne (thesmartone):
That would be easier instead of taking the 5 to the other side and dividing by -1 and having to flip the sign..
OpenStudy (anonymous):
arent you just left with y>1?
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TheSmartOne (thesmartone):
actually y<1
OpenStudy (anonymous):
because you flip the sign ohh ok
TheSmartOne (thesmartone):
So Option B ^_^
OpenStudy (mathmath333):
y>1 is same as y<1
OpenStudy (anonymous):
oh okay yayy
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TheSmartOne (thesmartone):
^^ actually not
OpenStudy (anonymous):
On to the next one
OpenStudy (mathmath333):
oops sry, i mean y>1 is same as 1<y
TheSmartOne (thesmartone):
y>1 means y can be 1.1 all the way to infinity
y<1 means y can be anything from.9 to -infinity
TheSmartOne (thesmartone):
lol that's okay.. ^_^
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OpenStudy (anonymous):
Which represents the given compound inequality in interval notation?
X greater than or equal to x < -4
A. x E (-infinity,-4) U [8, infinity)
B. x E (-4,8]
C.x E [-4,8)
D.x E ( I infinity,-4] U (8, infinity)
OpenStudy (anonymous):
ops its suppose to say X greater than or equal to 8 or x < -4
TheSmartOne (thesmartone):
Ok that makes more sense..
OpenStudy (anonymous):
my fault sorry
OpenStudy (mathmath333):
|dw:1413923043547:dw|
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