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4 0

2 years ago

In my friend's coin purse, I found 12 pennies. The ages, in years, of the pennies obtained by subtracting the year stamped on th

Arlecino [84]

Answer: mean = 10.3 and median = 9.5

Step-by-step explanation:

Given data :

22, 14, 8, 1, 9, 0, 31, 2, 13, 3, 11, 10

Mean = $\dfrac{\text{Sum of all data values}}{\text{No. of data values}}$

$=\dfrac{22+14+8+1+9+0+31+2+13+3+11+10}{12}$

$=\dfrac{124}{12}=10.3$

Median = Middle most value.

For Median , we first arrange the data values in an order.

0 , 1 , 2, 3, 8, 9, 10 , 11, 13 , 14, 22, 31

Since , number of data values is 12 ( even) , so the median would be the mean of the two middlemost value.

i.e . Median= $\dfrac{9+10}{2}=9.5$

Hence, the mean and median of this distribution (in years) are :

mean = 10.3 and median = 9.5

8 0

3 years ago

What is x? answer fast please!

Sindrei [870]

Answer:

$\Huge \boxed{{x=15\°}}$

Step-by-step explanation:

Angles on a straight line add up to 180 degrees.

We can create an equation.

x + 165 = 180

Solve for x.

Subtract 165 from both sides.

x + 165 - 165 = 180 - 165

Simplify the equation.

x = 15

6 0

2 years ago

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Consider △ABC and △DEF.

gogolik [260]

The answer would be the first option

because the size of the shape is not altered

8 0

3 years ago

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