One pump can drain a pool in 12 minutes. When a second pump is used, the pool only takes 7 minutes to
drain. How long would it take the second pump to drain the pool if it were the only pumped used?

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.

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.

Use the distance formula to find the distance between (-3,5) and (3,1)