Mathematics
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OpenStudy (anonymous):
Need confirmation.
Question in comments, I think the answer is 4.
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OpenStudy (anonymous):
OpenStudy (anonymous):
@DannyO19
OpenStudy (dannyo19):
Now you have to substitute g(x) in for x in f(x) right?
OpenStudy (anonymous):
Yea like before o.o
OpenStudy (dannyo19):
So you get the Sqrt of (6x-18)
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OpenStudy (dannyo19):
Right?
OpenStudy (anonymous):
Idk o.o
jhonyy9 (jhonyy9):
yes
OpenStudy (dannyo19):
cuz that's f of g(x)
OpenStudy (anonymous):
so how do we find x now? :/
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jhonyy9 (jhonyy9):
what you know about radical ? when is undefined in plane of real numbers ?
jhonyy9 (jhonyy9):
allwasy need being greater than zero - yes ?
OpenStudy (anonymous):
What?
jhonyy9 (jhonyy9):
so than 6x-18>0
6x>18
x>3
x=4
how you have wrote there above
OpenStudy (dannyo19):
Zero times zero makes for the first square root among all real numbers that would present on a typical graph.
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RhondaSommer (rhondasommer):
remember how we tried to get zero?
OpenStudy (anonymous):
Wait so is the answer 4 then? ><
RhondaSommer (rhondasommer):
no.
OpenStudy (dannyo19):
18-18 is zero so how do we get 18 from x?
RhondaSommer (rhondasommer):
why dont you plug it into the calculator ><
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OpenStudy (dannyo19):
6x-18 = zero is your minimum value that will be in the function
OpenStudy (dannyo19):
So can you solve for x?
OpenStudy (anonymous):
18/6?
jhonyy9 (jhonyy9):
@WhatEven you are right with 4 sure
OpenStudy (anonymous):
3?
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OpenStudy (dannyo19):
Yes, that's it.
RhondaSommer (rhondasommer):
yes @WhatEven
jhonyy9 (jhonyy9):
3 not is right because you get 18-18 =0
RhondaSommer (rhondasommer):
honesty; most of these you could plug into the calculator and find the answer that way.
RhondaSommer (rhondasommer):
exactly @jhonyy9
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jhonyy9 (jhonyy9):
and you know that a squaroot need being allways greater than zero
jhonyy9 (jhonyy9):
thank you @RhondaSommer - you know it sure right
RhondaSommer (rhondasommer):
look bruh. i graphed it.
OpenStudy (anonymous):
No 3 is right my assignment said correct. and I tried plugging it in I wasn't sure how exactly though.
RhondaSommer (rhondasommer):
you are supposed to equal it to zero
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RhondaSommer (rhondasommer):
3 is correct is what i was saying
RhondaSommer (rhondasommer):
why dont you just use the graphing calculator?
OpenStudy (anonymous):
@RhondaSommer since you have a medal and danny helped I'm going to medal him if that's okay :$
RhondaSommer (rhondasommer):
no prob :P i was gone for too long anyway
OpenStudy (anonymous):
Also brb my dog needs out
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RhondaSommer (rhondasommer):
brb need to clean