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12345 [234]
4 years ago
6

What is the length of line segment PQ? 4 units 5 units 6 units 9 units

Mathematics
2 answers:
kirill115 [55]4 years ago
7 0

Answer: The correct option is second. The length of line segment PQ is 5 units.

Explanation:

From the given figure it is noticed that the MN is the tangent to the circle at point M and its length is 6.

The line PQ is the secant line with length x and QN is external secant segment with length 4 .

According to the tangent secant theorem the square of tangent is equal to the product of external secant with the sum of the of secant and external secant.

MN^2=QN\times PN

6^2=4\times (x+4)

36=4x+16

20=4x

x=5

Therefore, the length of line segment PQ is 5 units.

makkiz [27]4 years ago
3 0
Hello! 

I was looking for this answer as well, but I took the quiz and got it correct. The answer is 5 units. 

good luck! 
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