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KonstantinChe [14]
2 years ago
15

The mean length of 9 childrens' big finger is 6.8cm.

Mathematics
1 answer:
Ulleksa [173]2 years ago
3 0

Answer:

The mean length of these 12 people's big finger is of 7.85 cm.

Step-by-step explanation:

Mean value:

Sum of the values of all observations divided by the number of observations.

In this question:

9 + 3 = 12 total observations

Sum:

9*6.8 + 3*11 = 94.2

So

M = \frac{94.2}{12} = 7.85

The mean length of these 12 people's big finger is of 7.85 cm.

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Nimfa-mama [501]

The question was incomplete. Below you will find the missing content.

In the figure below, BL, AM, and CK are medians of △ABC. If KC = 108 and OC = 2n + 10, then n=

The picture is attached below.

The value of n is 31.

The median is the line connecting the vertex and its midpoint on the opposite side of the triangle.

The intersection of all 3 medians of the triangle is called the centroid.

As we know centroid divides the median in the ratio of 2:1.

In the given picture,

Medians of triangle △ABC are AM, BL, and CK.

So the centroid of the triangle is O.

Given that KC= 108

As the centroid O divides the line KC in 2:1.

Let OC=2x

KO= X

As KC= KO+OC

⇒ 108= x+2x

⇒ 3x=108

⇒ x=108/3

⇒ x=36

Then OC= 2x= 2*36= 72

As given in the question OC= 2n+10

putting the value of OC in above equation

⇒ 72= 2n+10

⇒ 2n= 72-10

⇒ 2n=62

⇒ n=62/2

⇒n=31

Therefore the value of n is 31.

Learn more about the median of the triangle

here: brainly.com/question/2264495

#SPJ10

5 0
2 years ago
Use the order of operations to simplify the given expression.<br> 4−6+2⋅7
andrezito [222]

Answer:

19

Step-by-step explanation:

PEMDAS

no parenthesis

no exponents

4-6+2 x 7

4-6+ 17

no division

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19 is the answer

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3 years ago
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Wewaii [24]

Answer:

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Step-by-step explanation:

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3 years ago
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The function g(x)=x^2+3. The f(x)=g(x+2)
vekshin1

Answer:

f(x)=x^2+6x+12

Step-by-step explanation:

Given:

The function 'g(x)' is given as:

g(x)=x^2+3

Now, the function 'f(x)' is given as:

f(x)=g(x+2)

So, the function 'f(x)' is a transformation of 'g(x)'.

In order to find f(x), we replace 'x' by (x + 2) in the 'g(x)' function equation. This gives,

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Using the identity (a+b)^2=a^2+b^2+2ab, we get:

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Hence the function f(x) is given as:

f(x)=x^2+6x+12

4 0
3 years ago
Name a combination of coins that is 65% of the value of a dollar. (SHOW LIst of combination<br>​
svet-max [94.6K]

We need a combination of coins that equal 65 cents.

The easiest one is 13 nickels.

Another combination is 6 dimes and 1 nickel.

A third is 2 quarters, 1 dime, and 1 nickel.

The list goes on.

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hope it helps

4 0
3 years ago
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