A snow-cone machine priced at $139 is on sale for 20% off. What is the price of the snow-cone machine after the discount?

Prove that quadrilateral is a rhombus.

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

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?