You are constructing deck chairs that require 12 2/3 ft of lumber each. how many feet of lumber will you use to make 15 chairs?

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.

Can someone me and do the problem plz so i can understand it more better

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?