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Brut [27]
3 years ago
6

Which value of x would make NO II KJ? 1 6 8 10

Mathematics
2 answers:
frez [133]3 years ago
8 0
We sketch the two similar shapes and they are as shown in the attachment. We want to write corresponding side's length in ratio

LN : LK = x-3 : (x-3+x+2) = (x-3) : (2x-1)
LO : LJ = (x-4) : (x-4+x) = (x-4) : (2x-4)

Writing the two ratio as fraction gives
\frac{x-3}{2x-1} =  \frac{x-4}{2x-4}

Cross multipliying gives (x-3)(2x-4)=(x-4)(2x-1)


Thepotemich [5.8K]3 years ago
8 0

we know that

If NO II KJ

then

triangles LKJ and LNO are similar and the ratio of the corresponding sides are equals

so

\frac{LO}{LN}= \frac{LJ}{LK}

we have

LO=(x-4)\ in

LN=(x-3)\ in

LJ=LO+OJ=(x-4)+x=2x-4\ in

LK=LN+NK=(x-3)+(x-2)=2x-1\ in

substitute

\frac{x-4}{x-3}=\frac{2x-4}{2x-1} \\ \\(x-4)*(2x-1)=(2x-4)*(x-3)\\ \\2x^{2} -x-8x+4=2x^{2} -6x-4x+12\\ \\-9x+10x=12-4\\ \\ x=8\ units

therefore

<u>the answer is the option</u>

x=8\ units

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