How many hours is 9am to 730pm?

Is 0.32 oz the same as 1.0 grams? What is a way of representing part of a whole or part of a group called? What is the centre and radius of a circle whose equation is 2x2 plus 2y2 plus 2x -6y -9? Is pre k necessary? What is 26.50 with tax rate of 6? How many pounds is 74 kilograms? What is the area of a triangle with a base of 6 cm a height of 2 cm? How many numbers on a scale from 1-10? Is a Euro worth more than a US dollar? How do you write 1 to 9 numbers in roman? How much is 1.85 million? What is the mixed number for 1 over 4? In a stock name such as iron III sulfate the roman numeral tell us? How many decimeters are in 39.37 inches? Are two intersecting streets considered perpendicular? In a standard deck of cards of 52 cards what is the probability of drawing a heart or diamond? 1900 in roman numerals? Is 38.9 Celsius dangerous? How much is 26.73 grams of silver worth in todays market? What is 1 out of 3 as percentage?