Explanation:
First you had to square from both sides of equation form.
Then you expanded form.
Solve by equation form.
Add by four from both sides of equation form.
Simplify.
Verified solutions.
Final answer: 
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-Charlie
<span><span>The sum of the degree measures of two complementary angles is 90, so subtract 18 from 90.
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</span><span>The sum of the degree measures of two supplementary angles is 180...<span>
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Answer: The range is 13. The mean is 10. The standard deviation is 4.62 .
Step-by-step explanation:
The given data : 3, 6, 9, 11, 15, 16
Total number of data values : n = 6
The mean of data is given by :-
The standard deviation is given by :-
The range of the data : Maximum value -Minimum value
I got 1/81. because u spun the spinner twice i multiplied the regions you are allowed to get by 2 which makes your denominator 18 then you can get the numbers 3 and 6 twice since the spinner is used twice then multiplied them together. so it would be 2/18 x 2/18 = 4/324 which equals 1/81
