# Math

5).Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table.
7 ½ to nearest 1/5 inch to the nearest centimeter
7 3/8 23 3/5 60
? ?
6). A sample of 144 firecrackers contained 8 duds. How many duds would you expect in a sample of 1584 firecrackers?
7). Find the variation constant and an equation of variation where y varies directly as x and y = 30 when x = 3. The variation constant is k=?
8). The number N of aluminum can used each year varies directly as the number of people P using the cans. If 57 people use 20.919 can s in one year, how many cans are used in a city which contains a population of 1.777.000?

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