Mayra runs 3 and a quarter miles in one half hour. what is her speed in miles per hour

Mayra is running at a speed of 6.5 miles per hour.

Step-by-step explanation:

There are a few ways to solve this problem using different operations.  First, you need to convert 3 and a quarter into a decimal.  Since we know that a quarter is represented by 1/4, or 0.25, then we can combine this with Mayra's other 3 miles to get 3.25 miles.  Also, one half is the equivalent of 1/2 or 0.5 of an hour.  Since we know that 1/2 + 1/2 equals a whole, then if we take the distance that Mayra traveled in 0.5 of an hour and multiply it by 2, we would get her distance for the full hour:  3.25 x 2= 6.50.  We can also solve be taking her original distance of 3.25 and dividing by the total time of 0.5:  3.25/0.5 = 6.50.  Either operation will give us the same answer.  

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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