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9966 [12]
3 years ago
13

What is the mean for the data set? (11, 10, 9, 12, 10). A-9 B-12 C-11 D- 10.4

Mathematics
2 answers:
Sladkaya [172]3 years ago
8 0

Answer:

10.4

Step-by-step explanation:

If you add all of these up and divide by 5 you get 10.4 which is the average value.

sertanlavr [38]3 years ago
5 0

Answer:

D

Step-by-step explanation:

(11+10+9+12+10)/5= 10.4

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Help please I am not understand​
amm1812

Answer:

4.5 units

Step-by-step explanation:

The formula given is used to calculate the length of a segment given the coordinates of the endpoints.

let (x₁, y₁ ) = A(-1, 1) and (x₂, y₂ ) = (3,3), then

AB = \sqrt{(3+1)^2+(3-1)^2}

    = \sqrt{4^2+2^2}

    = \sqrt{16+4} = \sqrt{20} ≈ 4.5 ( nearest tenth )

6 0
3 years ago
You are moving to a new apartment and need to hire a moving company. You’ve researched local moving companies and found these pr
olga_2 [115]

Answer:

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8 0
3 years ago
How do I find this, what’s the formula to find the 20th term and can anyone explain the formula? Will award brainliest
harina [27]

Answer:

  • f(n) = n^2 +1
  • f(20) = 401

Step-by-step explanation:

The first differences of the sequence are ...

  • 5-2 = 3
  • 10-5 = 5
  • 17-10 = 7
  • 26-17 = 9
  • 37-26 = 11

Second differences are ...

  • 5 -3 = 2
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  • 11 -9 = 2

The second differences are constant, so the sequence can be described by a second-degree polynomial.

We can write and solve three equations for the coefficients of the polynomial. Let's define the polynomial for the sequence as ...

  f(n) = an^2 + bn + c

Then the first three terms of the sequence are ...

  • f(1) = 2 = a·1^2 + b·1 + c
  • f(2) = 5 = a·2^2 +b·2 + c
  • f(3) = 10 = a·3^2 +b·3 +c

Subtracting the first equation from the other two gives ...

  3a +b = 3

  8a +2b = 8

Subtracting the first of these from half the second gives ...

  (4a +b) -(3a +b) = (4) -(3)

  a = 1 . . . . . simplify

Substituting into the first of the 2-term equations, we get ...

  3·1 +b = 3

  b = 0

And substituting the values for a and b into the equation for f(1), we have ...

  1·1 + 0 + c = 2

  c = 1

So, the formula for the sequence is ...

  f(n) = n^2 + 1

__

The 20th term is f(20):

  f(20) = 20^2 +1 = 401

_____

<em>Comment on the solution</em>

It looks like this matches the solution of the "worked example" on your problem page.

4 0
3 years ago
Consider the volume of the region shown below, which shows a right circular cone with top radius 3 cm and height 10 cm. We have
koban [17]
I have the same problem here with a slight change in the given values:

radius is 2 & height of 6 indicates the bounding line is y = 3 x---> x = y / 3.... 

<span>thus the [ π radius ² thickness ] yields π (y² / 9 ) <span>dy ,</span> y in [ 0 , 6 ] for the volume... </span>

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<span>π Σ { i = 1,2,3..n } [ 36 i² / 9 n² ] [ 6 / n ]
</span>
I hope my guide has come to your help. God bless and have a nice day ahead!
5 0
3 years ago
Roma sherry drove 80 miles from her home town to her​ parents' town. during her return​ trip, she was able to increase her speed
mr_godi [17]
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3 years ago
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