U Proving the Parallelogram Side Theorem

Given: ABCD is a parallelogram.

Prove: AB CD and BC DA

Angles Segments Triangles Statements

Reasons

given

def of parallelogram

unique line postulate

def. of alt interior angles

Statements

Reasons

Demo

Intro

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Which of the following is the correct ratio for converting kilograms to grams

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.