3 years ago

In the figure below, find the exact value of y.

Mathematics

1 answer:

Maru [420]3 years ago

7 0

9514 1404 393

Answer:

Step-by-step explanation:

y is the geometric mean of the segment lengths.

y = √(4·1)

y = 2

_____

You can also get there by considering the similarity of the triangles:

short side / long side = y/4 = 1/y

y^2 = 4 . . . . . . . multiply by 4y\

y = √4 = 2 . . . . take the square root

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