Question

I’m confused with this I don’t understand anything

Answer 1

Explanation:

You need to do math to solve for the answer.

Answer 2

Answer: 19.3

Work Shown:

`a^2 + b^2 = c^2\\\\a^2 + 23^2 = 30^2\\\\a^2 + 529 = 900\\\\a^2 = 900 - 529\\\\a^2 = 371\\\\a = √(371)\\\\a \approx 19.26136\\\\a \approx 19.3`

For more information, search out "pythagorean theorem" to see other examples. The pythagorean theorem only works for right triangles.