1,387 because you just add all the bricks (421+623+343)
4 1/2 or 4.5 (which ever you prefer)
Just multiply 6 by 3/4 for the answer.
Using the mean concept, it is found that on average, it takes him 11.9 seconds to run a 100 yard dash.
<h3>What is the mean?</h3>
The mean of a data-set is given by the <u>sum of all observations in the data-set divided by the number of observations</u>.
In this problem, the three observations are given by:
12.7 s, 11.2 s, 11.8 s.
Hence the mean is:
M = (12.7 + 11.2 + 11.8)/3 = 11.9.
On average, it takes him 11.9 seconds to run a 100 yard dash.
More can be learned about the mean of a data-set at brainly.com/question/24628525
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' x ÷ 3 ' is just another way to write ' 1/3 x ' ,
so your equation is y = 1/3 x .
The graph of that equation is a straight line,
going through the origin, with a slope of 1/3 .
