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What is the length of JM in the given figure?
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What is the length of JM in the given figure?

What is the length of JM in the given figure?-example-1
User Kayleigh
by
4.1k points

1 Answer

2 votes

Answer: B. 30

Explanation:

When given a secant and a tangent, the formula is:

exterior of secant × secant = tangent²

KM × JK = LK²

10 × (JM + 10) = 20²

10JM + 100 = 400

10JM = 300

JM = 30

User Sgrgmngt
by
4.7k points
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