Analyze the biconditional statement below and complete the instructions that follow. Two angles are congruent if and only if they have the same measure.

Write a definition based on the biconditional.

A.
Two angles have the same measure.
B.
Two angles are congruent.
C.
Two angles are congruent if they have the same measure.
D.
If they have the same measure, then they are congruent.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

2/3(-6y+9x) expand each expression using the distributive property