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Oksana_A [137]
4 years ago
15

How you get sample variance

Mathematics
1 answer:
svp [43]4 years ago
6 0
To calculate the variance follow these steps: Work out the Mean (the simple average of the numbers) Then for each number: subtract the Mean and square the result (the squared difference). Then work out the average of those squared differences.
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The product of two exponentail expressionss is x5 y2 z. One of the expressions is x2 y. What is the other expression?
Yakvenalex [24]
I hope this helps you



x^5.y^2.z/x^2.y


x^5-2.y^2-1.z


x^3.y.z
8 0
3 years ago
Read 2 more answers
If n represents a number, then write an expression for the difference of three times the number after it was increased by 3 and
faust18 [17]
• Increased by 3
n+3
• Twice the number
2(n+3)
• Three times the number
3n
• Final result
2(n+3)-3n
5 0
3 years ago
What is the slope of y=7-3x
Anna [14]
The equation used above is y-intercept form. 

ex. y = mx + b

Whatever is in front of the x is your slope.

Your slope is -3
7 0
3 years ago
The point P = (-3, y) lies on the unit circle shown below. What is the value of y
alukav5142 [94]

The equation of the circle is given as (x-h)² + (y-k)² = r². Then the value of y will be ± √5/3.

<h3>What is an equation of a circle?</h3>

A circle can be characterized by its center's location and its radius's length.

Let the center of the considered circle be at (h, k) coordinate.

Let the radius of the circle be 'r' units.

Then, the equation of that circle would be:

(x-h)² + (y-k)² = r²

The equation of the circle has the center at the origin and the radius is one unit. Then we have

x² + y² = 1

The point P = (-2/3, y) lies on the unit circle. Then the value of y will be

(-2/3)² + y² = 1

y² = 1 - 4/9

y² = 5/9

y = ± √5 / 9

Learn more about the equation of a circle here:

brainly.com/question/10165274

#SPJ1

5 0
2 years ago
A shoebox is 14 inches long and 9 1/2 inches wide. Its volume is 665 cubic inches. Which equation can you use to find how tall t
Vilka [71]

Lets see

  • Volume=Length ×Breadth ×Height

B=9 1/2=9.5in

L=14in

Now

  • 665=14(9.5)H
  • 665=133H
  • H=5in
7 0
2 years ago
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