Abuilding is in the shape of a square pyramid. each side of the base is 54 meters long and the height is 260 meters. i know is 1/3 b*h  is that google failed me before

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.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?