Mathematics
9 Online
OpenStudy (sparklestaraa):
Help Check Questions.
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OpenStudy (sparklestaraa):
OpenStudy (sparklestaraa):
OpenStudy (anonymous):
\[\left| 2x-3 \right|+5=4\]
OpenStudy (anonymous):
\[\left| 2x-3 \right|=-1\]
OpenStudy (sparklestaraa):
Which is this one?
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OpenStudy (anonymous):
question 13
OpenStudy (sparklestaraa):
oh this is the answer thats wrong?
OpenStudy (anonymous):
let me show u the working
OpenStudy (sparklestaraa):
ok :)
OpenStudy (anonymous):
\[2x-3=\pm(-1)\]
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OpenStudy (anonymous):
\[2x=3\pm(-1)\]
OpenStudy (anonymous):
\[x=\frac{ 3\pm(-1) }{ 2 }\]
OpenStudy (anonymous):
\[x=\frac{ 3+(-1) }{ 2 }\]\[x =\frac{ 3-(-1) }{ 2 }\]
OpenStudy (anonymous):
\[x=\frac{ 3-1 }{ 2 },x=\frac{ 3+1 }{ 2 }\]
OpenStudy (anonymous):
\[x=1,x=2\]
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OpenStudy (anonymous):
Therefore,the solution of equation 1 are x=1,2
OpenStudy (anonymous):
second equation....
OpenStudy (anonymous):
\[\left| 5x+3 \right|-10=3\]
OpenStudy (anonymous):
\[\left| 5x+3 \right|=10+3\]
OpenStudy (anonymous):
\[\left| 5x+3 \right|=13\]
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OpenStudy (anonymous):
\[5x+3=\pm13\]
OpenStudy (sparklestaraa):
I think i understand let me try :)
OpenStudy (anonymous):
okay ^_^
OpenStudy (sparklestaraa):
x= -2 :D
OpenStudy (anonymous):
no wait
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OpenStudy (sparklestaraa):
oh ok
OpenStudy (anonymous):
\[5x+3=\pm13\]
OpenStudy (anonymous):
\[5x=-3\pm13\]
OpenStudy (anonymous):
\[x=\frac{ -3\pm13 }{ 5 }\]
OpenStudy (anonymous):
\[x=\frac{ -3+13 }{ 5 },x=\frac{ -3-13 }{ 5 }\]
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OpenStudy (anonymous):
\[x=\frac{ 10 }{ 5 },x=\frac{ -16 }{ 5 }\]
OpenStudy (anonymous):
\[x=2,-3.2\]
OpenStudy (anonymous):
@Sparklestaraa
OpenStudy (anonymous):
so which statement is correct? @Sparklestaraa
OpenStudy (sparklestaraa):
D :D
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OpenStudy (sparklestaraa):
THANKS so so so much :D so was this the only one i got incorrect
OpenStudy (sparklestaraa):
@ILUVSOCCER
OpenStudy (anonymous):
let's check question 14
OpenStudy (anonymous):
\[7-9x-(x+12)\le25\]
OpenStudy (anonymous):
\[7-10x-12\le25\]
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OpenStudy (anonymous):
\[-10x-5\le25\]
OpenStudy (anonymous):
\[-10x \le30\]
OpenStudy (anonymous):
\[x \ge-3\]
OpenStudy (anonymous):
question 14 u r correct. :)
OpenStudy (sparklestaraa):
:) thanks @MARC_ @ambius Here its above in the screenshots i can make a new question to give u medals if u would like
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OpenStudy (sparklestaraa):
Can u fan me so i can message u ? @MARC_