Given: m<BCD + m<BEF= 180°, AB || DC
Prove: BC || EF
Provide a 2 column proof chart.

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?