ramses200330 ramses200330

06-08-2020
Mathematics

contestada

I need to find AB can someone please help me ASAP :(

I need to find AB can someone please help me ASAP class=

Respuesta :

mathmate mathmate

06-08-2020

Answer:

AB = 11

Step-by-step explanation:

Using the external secant property,

CB*CA = CD*CL (=CT^2 if T is tangent throught C)

substitute values,

7*(7+2x+3) = 9*(9+x+1)

Expand and simplify

70+14x = 90 + 9x

5x = 20

x = 4

=>

AB = 2x+3 = 2(4)+3 = 8+2 = 11

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