If 12 less than 4 times a number is 8, the number is 5. write a different sentence where the unknown number is also 5.

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.

Answer question above and explain each step : )

What is the area of the trapezoid shown ?