nickiscool71
nickiscool71 nickiscool71
  • 14-04-2020
  • Mathematics
contestada

i cant figure out the answer for this can you help me

i cant figure out the answer for this can you help me class=

Respuesta :

jimrgrant1 jimrgrant1
  • 14-04-2020

Answer:

RV = 5, AV = 9

Step-by-step explanation:

Two secants to a circle from an external point, then

The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is

4(4 + RV ) = 3(3 + 9), that is

16 + 4RV = 3 × 12 = 36 ( subtract 16 from both sides )

4RV = 20 ( divide both sides by 4 )

RV = 5

and AV = 4 + 5 = 9

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