In the diagram, AB = BC. Prove that ABCD is a cyclic quadrilateral

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

Given the median qr and trapezoid mnpo what is the value of x?