He vertices of ? abc are a(2, 8), b(16, 2), and c(6, 2). the perimeter of ? abc is units, and its area is square units.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Abcd is a square. what is the measure of angle bac