What is the value of x?

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x =

x = 5

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 12² = 13², so

x² + 144 = 169 ( subtract 144 from both sides )

x² = 25 ( take the square root of both sides )

x = = 5

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

the answer is a if my teacher taught me correct