Three kids play tennis at the same tennis courts. Mark plays every fourth day, David plays every seventh day and Bryan plays eve
2 answers:
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For this case we have the following equation:
We apply distributive property on the left side of the equation:
Subtracting from both sides of the equation:
Subtracting from both sides of the equation:
We multiply by 3 on both sides of the equation:
We multiply by -1 on both sides of the equation:
The solution of the equation is
ANswer:
The dot plot uses dots to for data representation.
- <em>The dot plot is right skewed</em>
- <em>There is an outlier, 9.</em>
- <em>The best measure of center is median</em>
<u>(a) The description</u>
From the dot plot (see attachment), we have the following observations,
- <em>There are more data at the left-hand side, than the right-hand side of the dot plot.</em>
- <em>There is only one data element at the right-hand side</em>
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This means that the dot plot is right skewed
<u>(b) Outlier</u>
From the dot plot, we can see that 9 is relatively far from the other data elements.
This means that 9 is outlier
<u>(c) Measure of center</u>
In (b), we established that the dot plot has an outlier.
When there is an outlier, the best measure of center to use is the median.
<em>Hence, the median will be used as the measure.</em>
Read more about dot plots at:
Why?
We have the isosceles right triangle. The length of legs are 6. Use the Pythagorean theorem:
In general, the formula for calculating the hypotenuse in an isosceles right triangle is
a - a leg, h - a hypotenuse