Complete the sentence with the phrase that makes the proof statement true. segment pr is perpendicular to segment qs. angle qrp is a right angle a. by the definition of perpendicular. b. because angle q is congruent to angle s. c. by the reflexive property of equality. d. because pqr is an isosceles triangle.

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b