There are 12 nickels, dimes and quarters whose total value was 1.55 the number of nickles exceeds the number of quarters by 1, how many of each coin was there

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.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect