Abicyclist travels 60.0 kilometers in 3.5 hours. what is the cyclist's speed?

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.

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Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?