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n200080 [17]
3 years ago
12

What’s the value of x?

Mathematics
1 answer:
ale4655 [162]3 years ago
5 0

Answer:

x=12

Step-by-step explanation:

What we have here is a secant and tangent. Using this theorem,

Given the segments of a secant segment and a tangent segment which share an endpoint outside of a circle,

The product lengths of the secant segment and external secant segment equals the length of the tangent segment squared.

In other words,

9(7 + 9) =  {x}^{2}

9(16) =  {x}^{2}

144 =  {x}^{2}

x = 12

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