Nathan is facing west. He takes a quarter-turn anticlockwise. What direction is he now facing?

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?