Question

Can someone please help me find x​

Answer 1

`2√(5)`

Explanation:

The picture (attached) shows two isosceles right triangles, so the altitude marked x splits the bottom side in half, 4 units and 4 units.

Each triangle is a right triangle with one leg of length 4, hypotenuse 6. Use the Pythagorean Theorem (leg)^2 + (leg)^2 = (hypotenuse)^2.

`4^2+x^2=6^2\\16+x^2=36\\x^2=20\\x=√(20)\\x=2√(5)`