alainabbyboo22
I am so confused on this .. can someone please help me out on how to solve the equation listed ?
Find the value of x in the figure below.
A. 1/4
B. 1
C. 4
D. 6
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alainabbyboo22
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goformit100
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i got
alexandercpark
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the radius of a circle will always hit a chord at a right angle, and always bisect the line
this is all just a fancy way of saying though that
\[3x+5=5x-7\]
alexandercpark
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my geometry lingo is rusty but im confident that can lead you to the right answer
goformit100
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|dw:1350956332066:dw| do you agree with that you can use pythagoras' theorem here ??
goformit100
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|dw:1350956574279:dw|
goformit100
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in triangle ABC, reply how will you use pythgors' theorem
goformit100
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(OA)^2 = (OB)^2 + (BA)^2
OR, (OA)^2 = (OB)^2 + (5X-7)^2 ......... .......... ( 1 )
goformit100
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n triangle OBC, use pythgors' theorem
goformit100
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(OC)^2 = (OB)^2 + (BA)^2
OR, (OA)^2 = (OB)^2 + (3X+5)^2 ......... .......... ( 2 )
goformit100
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REPLY WHAT YOU GET WHEN YOU EQUATE BOTH EQUATIONS 1 AND 2 .....
goformit100
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@alainabbyboo22 REPLY
goformit100
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r you there ???
goformit100
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(3X+5)^2 = (5X-7)^2
Solve it for x ...
jhonyy9
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@goformit100 calcule you the x please !
good work
nice
alainabbyboo22
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help !
alainabbyboo22
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could you please help me out with this ? i don't understand .
@jhonyy9 help me ?
hba
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Hint 1 >Apply Square root on both sides :)
jhonyy9
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(3x+5)^2 =(5x-7)^2 make squarroot on both sides
3x+5=5x-7
5+7=5x-3x
12=2x
x=12/2
x=6