100 POINTS
A stainless steel patio heater is a square pyramid. The length of one side of the base is 21.2 in. The slant height of the pyramid is 90.9 in. What is the height of the pyramid?

Use b^2+b^2=c^2
A=21.2
B=90.9

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.

Find the value of x for which abcd must be a parallelogram -9-6x x-30

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left