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21-05-2018
Mathematics

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What is the length of segment EC?

What is the length of segment EC class=

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upandover upandover

21-05-2018

Hi there!

Let's use the relationships for external secants.

Equation:
14(14 + 16) = 10(10 + EC)

Solving:
420 = 100 + 10EC
320 = 10EC
EC = 32

EC = 32 + 10
EC = 42

ANSWER:
D - 42

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