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zysi [14]
2 years ago
8

Find the standard deviation for the set of data. {5,4, 18, 14, 22, 20, 6, 16, 12}

Mathematics
1 answer:
ira [324]2 years ago
6 0
The Answer is 6.3245553203368.

Also if you can please answer my recent question.
That will Mean so much.
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What is the sum? StartFraction 3 Over x squared minus 9 EndFraction StartFraction 5 Over x 3 EndFraction.
V125BC [204]

The sum of the two fractional number, which consist in the variable <em>x</em> is in the polynomial function,

f(x)=\dfrac{5x-12}{(x+3)(x-3)}

<h3>What is the sum of fraction number?</h3>

Fraction number is the number which is a part of a whole number. It is written with a numerator and denominator.

Fraction number are written as,

\dfrac{a}{b}

Here (a) is the numerator and (b) is the denominator.

To find the sum of two fraction numbers, cross multiply both the numbers or find the least common factor as denominator.

The first fraction number given in the problem is,

\dfrac{3}{x^2+9}

The second fraction number given in the problem is,

\dfrac{5}{x+3}

Let the sum of these number is f(x). Thus,

f(x)=\dfrac{3}{x^2-9}+\dfrac{5}{x+3}\\f(x)=\dfrac{3}{(x+3)(x-3)}+\dfrac{5}{x+3}\\

Solve it further as,

f(x)=\dfrac{3+5(x-3)}{(x+3)(x-3)}\\f(x)=\dfrac{3+5x-15}{(x+3)(x-3)}\\f(x)=\dfrac{5x-12}{(x+3)(x-3)}

Thus, the sum of the two fractional number is,

f(x)=\dfrac{5x-12}{(x+3)(x-3)}

Learn more about the fraction number here:

brainly.com/question/78672

6 0
2 years ago
27 minus 9X +15 Y please
Oksanka [162]

27 - 9x +15y

Factor out common  term 3 :

3(9-3x+5y)

hope this helps!

7 0
3 years ago
Read 2 more answers
A dartboard has a diameter of 18 inches.What are its radius and circumference?
allsm [11]
Diameter of the dartboard as given in the question = 18 inches
Then
Radius of the dartboard will be = 18/2 inches
                                                  = 9 inches
We already know that
Circumference of a circle = <span>2π</span>r
We also know that the value of <span>π = 3.14159
Then
Circumference of the dartboard = 2 * 3.14159 * 9 inches
                                                    = 56.548 inches
                                                    = 56.55 inches
So the radius of the dartboard is 9 inches and the circumference of the dartboard is 56.55 inches. I hope the procedure is absolutely clear to you.
</span>
3 0
3 years ago
Mitch's father needs 1 1\2 tons of gravel.He bought 1,750 pounds of gravel.How many more pounds of gravel does he need
Fynjy0 [20]
A ton is 2000 lbs.  1 1/2 is 3000 lbs.  He needs 3000-1750 which is 1250.
6 0
3 years ago
Is the following relation a function?
rjkz [21]
Because for each x-value in the domain of this relationship, except for 0, there is more than one y-value, this is NOT a function.  
3 0
3 years ago
Read 2 more answers
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