Mathematics
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OpenStudy (anonymous):
do i have to set up a chart before i can solve this i know its a floor funtion
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OpenStudy (anonymous):
OpenStudy (anonymous):
i think it is d
hartnn (hartnn):
yes, it is d
OpenStudy (anonymous):
the other one i'm not sure about is d on this problem
i subed in -1 and im just sot sure what is the correct sign
OpenStudy (anonymous):
thank you i know im on track for my graphs
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hartnn (hartnn):
no wait, sorry :P
OpenStudy (anonymous):
lool
OpenStudy (anonymous):
where did i go wrong?
hartnn (hartnn):
when x=-1, there is closed (dark) circle at 2
so, it woul be C
also 'd' does NOT give answer for 'x' values between 2 and -1.,so..
OpenStudy (anonymous):
wait what about -1 < -1?
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hartnn (hartnn):
what ? where's -1<-1 ??
OpenStudy (anonymous):
in c :
2 if x , -1
so if x = -1 then what?
OpenStudy (anonymous):
* 2 if x < -1
hartnn (hartnn):
2x if x>=-1
so, x=-1 will fall in this case.
OpenStudy (anonymous):
oh right it only has to fit into one of them, i forgot that, thank you :)
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OpenStudy (anonymous):
i have 3 more problems that i need to review on (i'm doing test corrections)
im dealing with square roots
hartnn (hartnn):
ok.
OpenStudy (anonymous):
hartnn (hartnn):
10x-5 = -4
find x from here, that would be your answer to 1st
OpenStudy (anonymous):
10x - 5 = - 4
10x = -4 + 5
10x = 1
x = 1 / 10
x = 0.1?
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hartnn (hartnn):
correct :)
OpenStudy (anonymous):
:)
hartnn (hartnn):
know how to get domain ?
OpenStudy (anonymous):
would the domain be -2 (<=) x (<=) 7
hartnn (hartnn):
just that x will not =-2
otherwise denom =0
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hartnn (hartnn):
-2 (<) x (<=) 7
OpenStudy (anonymous):
ah ok, so i have 2 more i just say we did one like 14 so im going to work that right quick
OpenStudy (anonymous):
wait, would it be option a, i know that the domain i saw in my lesson, im not sure if in the lesson it was 1/2 and not 1/x
hartnn (hartnn):
yes, option a is -2 (<) x (<=) 7
right ? so its a
hartnn (hartnn):
oh u mean for 14th ?
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hartnn (hartnn):
domain : denominator NOT=0
\(|x|-2 \ne 0\)
for which values of x?
OpenStudy (anonymous):
no im on problem 14
let me repost it
OpenStudy (anonymous):
yea
OpenStudy (anonymous):
im looking at option d as being the answer
|x|−2≠0
OpenStudy (anonymous):
i ment c
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hartnn (hartnn):
no,
you know what |x| mean ?
absolute value?
OpenStudy (anonymous):
no negatives
hartnn (hartnn):
oh yeah, C is correct :)
OpenStudy (anonymous):
lol, i looked again and didnt see the - sign lol
OpenStudy (anonymous):
ok man, thank you, and do you know how to invite someone to this website?
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OpenStudy (anonymous):
my friend catches "hell" with english
hartnn (hartnn):
yes,
see there's an Invite option besides Home, on upper right
OpenStudy (anonymous):
yes, i do see it
OpenStudy (anonymous):
thank you :)
hartnn (hartnn):
welcome ^_^