HEY CAN ANYONE PLS PLS PLS ANSWER DIS I AM STRUGGLING ALOT

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.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air