dominqui dominqui
  • 29-07-2018
  • Mathematics
contestada

find x .

Select one:
a. 3/4
b. 1/2
c. 2
d. 4

find x Select one a 34 b 12 c 2 d 4 class=

Respuesta :

rejkjavik rejkjavik
  • 31-07-2018

we are given

BE=x

ED=x+10

AE=x+1

EC=x+3

we can see that two chords AC and BD are intersecting inside the circle

so, we can use property

[tex] AE*EC=BE*ED [/tex]

now, we can plug values

[tex] (x+1)*(x+3)=(x)*(x+10) [/tex]

now, we can multiply them

[tex] x^2+4x+3=x^2+10x [/tex]

now, we can move all terms on left side

[tex] x^2+4x+3-x^2-10x=0 [/tex]

[tex] 3-6x=0 [/tex]

[tex] x=\frac{1}{2} [/tex]...............Answer

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