Question

Fan & Medal
Calculate the length of AD given AB = 7 cm, AC =15 cm, and AE = 20.
3.25

5.25

2.5

5.5


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Answer 1

\[\text{ AB } \cdot \text{ AC }=\text{ AE } \cdot \text{ AD }\]

Answer 2

7x15=20x?

Answer 3

yep solve for x aka AD

Answer 4

wait that one x over on the left hand side is a multiplication sign right?

Answer 5

yes

Answer 6

\[7 \cdot 15=20x \\ \text{ divide both sides by } 20\]

Answer 7

105/20=5.25

Answer 8

yes

Answer 9

thanks.

Answer 10

np
that is called the intersecting secant theorem