Use a proof by cases to show that every perfect square is either a multiple of four or one more than a multiple of four. hint you only need two cases! 2. use a proof by cases to show that if two integers are both odd or both even, then their sum is always even 3. use a proof by contraposition to show that if the sum of two numbers is odd then exactly one of the two numbers must be odd.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

How do you find the circumfrance of a circle?

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.