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emmainna [20.7K]
2 years ago
10

Formula to calculate variance​

Mathematics
1 answer:
finlep [7]2 years ago
8 0

Answer:

sample variance

the value of the one observation

the mean value of all observations

the number of observations

Step-by-step explanation:

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Emily loves potato chips and buys a bag every 5 days. Each bag costs $2.50, including tax. Once each month, she also treats hers
emmasim [6.3K]

Answer:

(2.5*(30/5)+6)*12=252

Step-by-step explanation:

5 0
3 years ago
Which equations have the same value of x as Two-thirds (6 x + 12) = negative 24? Select two options.
Anna71 [15]

Answer:

4x+8=-24 and

4x=-32

Step-by-step explanation:

2/3(6x+12)=-24

or,12x+24=-72

or,x=-72-24/12

•°•x=-8

4x+8=-24

or,x=-24-8/4

•°•x=-8

4x=-32

or,x=-32/4

•°•x=-8

4 0
3 years ago
Read 2 more answers
Patel squeezed oranges so that his family could have fresh-squeezed juice for breakfast. He squeezed StartFraction 4 over 17 End
lord [1]

Answer:

3089/11220

Approximately = 0.2753

Step-by-step explanation:

Patel estimates that he needs 2 cups of Orange juice.

But let's know the amount he already has.

4/17 + 3/10 + 9/20 + 3/11 + 7/15

= 3/10 + 9/20 + 7/15 + 3/11 + 4/17

=( 18 + 27 + 28)/60 + (51+44)/187

= 73/60 + 95/187

=( 13651 + 5700)/11220

= 19351/11220

= 1(8131/11220)

So to complete it two he needs ( 11220-8131)/11220= 3089/11220

Approximately = 0.2753

3 0
3 years ago
Read 2 more answers
The axis of symmetry for a function in the form f(x) = x2 + 4x - 5 is x = -2. What are the coordinates of the vertex of the
umka2103 [35]

Answer:

(- 2, - 9 )

Step-by-step explanation:

The axis of symmetry passes through the vertex of the parabola.

Thus the x- coordinate of the vertex is x = - 2

To find y substitute x = - 2 into f(x)

f(- 2) = (- 2)² + 4(- 2) - 5 = 4 - 8 - 5 = - 9

Vertex = (- 2, - 9 )

8 0
2 years ago
Read 2 more answers
Determine whether the vectors u and v are parallel, orthogonal, or neither.
Komok [63]
<span>The dot product here is 10(9) + 6(5)=120
so the vectors are not orthogonal 
</span><span>u.v = |u| x |v| cos (theta) ; theta is the angle between them 

we know from above that u.v = 120 

|u| = sqrt[10^2+6^2]=11.66
|v| = sqrt[9^2+5^2]=10.29

so we know: 

theta =cos^-1 120/(11.66x10.29)
so theta = 25 degrees</span><span>
</span>
3 0
3 years ago
Read 2 more answers
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