5. Find the squares of the following numbers using either (x + y)2 = x2 + 2xy + y or (x - y)² = x² - 2xy + y? (a) 199 (b) 103 (c) 202 (d) 395 (e) 998​

What is the slope of a line that is perpendicular to y = 3x + 1

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?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units