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Mamont248 [21]
3 years ago
15

The Mean of 5 numbers is 20 the median is 23 what might the number be

Mathematics
2 answers:
valentina_108 [34]3 years ago
7 0

13, 15, 23, 24, 25

Median is 23 because it comes in middle of five numbers

To find the mean, add up the values in the data set and then divide by the number of values that you added

if we sum these numbers we get 100 then divide it by 5 we get

100/5 = 20

lozanna [386]3 years ago
3 0

Answer:

<h2>12, 14, 23, 25, 26 </h2>

Step-by-step explanation:

We know that:

  • The mean is 20.
  • The median is 23.

If the mean is 20, then the sum of all number must be 100, because:

x=\frac{\sum x_{i}  }{N} \\20=\frac{\sum x_i}{5} \\\sum x_i=100

Also, we know that the median is 23, this means that the middle number is 23, because they number of elements is an odd number (5), when that happens, the median is always the number placed in the middle.

So, we know that the middle number is 23, now we have to find for numbers that sum 77, because 77+23 = 100.

The numbers that fit with all these characteristics are:

12, 14, 23, 25, 26

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(-4^-2) (49^-1/2)<br><br> Evaluate the expression
Marizza181 [45]

Answer:

-1/112

Step-by-step explanation:

-4^{-2}=\frac{1}{-4^2}=-\frac{1}{16} \\ \\ 49^{-1/2}=\frac{1}{49^{1/2}}=\frac{1}{7} \\ \\ (-1/16)(1/7)=-1/112

5 0
2 years ago
An isosceles triangle has two angles both equal to x°. The third angle is 60° bigger than either of these. Find the value of x°.
Elina [12.6K]
X+x+(x+60)=180
3x+60=180
3x=120
x=40
5 0
4 years ago
Compare learning about functions to learning a new language. How are they similar
kow [346]

Answer: They are similar many ways.

Step-by-step explanation:

1. There is a law that guides both of them. Because each has a strick law.

2. They both need practice. Practice they say makes one perfect. When u practice both of them, you become familiar on how to use them.

3. The brain has to read meaning to either of the two to be able to be able to learn a pattern of learn.

4. Both language and functions are systems. They are made of different parts, language is made up of different words while function is made up of axioms which theorems.

7 0
4 years ago
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5 0
3 years ago
the daily production cost, c, for x units is modeled by the equation: c = 200 – 7x 0.345x2 explain how to find the domain and ra
jenyasd209 [6]
C(x) = 200 - 7x + 0.345x^2

Domain is the set of x-values (i.e. units produced) that are feasible. This is all the positive integer values + 0, in case that you only consider that can produce whole units.

Range is the set of possible results for c(x), i.e. possible costs.

You can derive this from the fact that c(x) is a parabole and you can draw it, for which you can find the vertex of the parabola, the roots, the y-intercept, the shape (it open upwards given that the cofficient of x^2 is positive). Also limit the costs to be positive.

You can substitute some values for x to help you, for example:

x      y
0    200
1    200 -7 +0.345 = 193.345
2    200 - 14 + .345 (4) = 187.38
3    200 - 21 + .345(9) = 182.105
4    200 - 28 + .345(16) = 177.52
5    200 - 35 + 0.345(25) = 173.625
6    200 - 42 + 0.345(36) = 170.42

10  200 - 70 + 0.345(100) =164.5
11 200 - 77 + 0.345(121) = 164.745
 
 
The functions does not have real roots, then the costs never decrease to 0.

The function starts at c(x) = 200, decreases until the vertex, (x =10, c=164.5) and starts to increase.

Then the range goes to 164.5 to infinity, limited to the solutcion for x = positive integers.

6 0
4 years ago
Read 2 more answers
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