Johnathan can jog 3 2/3 miles in 7/8 hour. Determine his average speed in miles per hour.

1 answer:

5 0

If you would like to know Johnathan's average speed in miles per hour, you can calculate this using the following steps:

3 2/3 = 11/3 miles ... 7/8 hour
x miles = ? ... 1 hour

11/3 * 1 = 7/8 * x
11/3 = 7/8 * x
x = 11/3 * 8/7
x = 88/21
x = 4 4/21 miles

The correct result would be 4 4/21 miles per hour.

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Which of the following statements contain a variable? Check all that apply. A. There are 60 seconds in a minute. B. He is 15 yea

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The answer is the option C and the option D, which are:

C. Double the number of pages in the book.

D. The age of my friend.

The explanation for this problem is shown below:

By definition, a variable is an unkown quantity. In the Option A the quantity is given: $60$ seconds in a minute. In the option B you know the quantity too, which is $15$ years old. But the option C and the option D does not give any quantity, you don't know the number of pages in the book or the age of the friend yet. Therefore, the answer is the options C and D.