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kondaur [170]
3 years ago
12

A box plot was made to represent the number of matches won by 14 participants in a tennis tournament. The box plot had the box s

hifted to the right so that the left tail was much longer than the right tail. Based on the box plot, which conclusion is correct?
The mean and median of matches won are equal.

The mean of matches won is more than the median of matches won.

Most of the participants won many matches, but there were some participants who won very few matches compared to the others.

Most of the participants won very few matches, but there were some participants who won many matches compared to the others.
Mathematics
1 answer:
Zina [86]3 years ago
7 0
The right answer for the question that is being asked and shown above is that: "Most of the participants won many matches, but there were some participants who won very few matches compared to the others." <span>Based on the box plot, this conclusion is correct</span>
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Nata [24]

Answer:

First image attached

The error was done in Step E, because student did not multiply 2\cdot x -8 by the negative sign in numerator. Step E must be \frac{2\cdot x -5}{(x+4)\cdot (x-4)}.

Second image attached

The error was done in Step C, because the student omitted the 2\cdot a \cdot b of the algebraic identity (a+b)^{2} = a^{2}+2\cdot a\cdot b +b^{2}. Step C must be 5\cdot x = x^{2}+4\cdot x + 4

Step-by-step explanation:

First image attached

The error was done in Step E, because student did not multiply 2\cdot x -8 by the negative sign in numerator. The real numerator in Step E should be:

3-(2\cdot x -8)= 3-2\cdot x+8 = 11-2\cdot x

Hence, Step E must be \frac{2\cdot x -5}{(x+4)\cdot (x-4)}.

Second image attached

The error was done in Step C, because the student omitted the 2\cdot a \cdot b of the algebraic identity (a+b)^{2} = a^{2}+2\cdot a\cdot b +b^{2}. Step C must be 5\cdot x = x^{2}+4\cdot x + 4

And further steps are described below:

Step D

x^{2}-x+4 = 0

Which according to the Quadratic Formula, represents a polynomial with complex roots. That is: (a = 1, b = -1, c = 4)

D = b^{2}-4\cdot a\cdot c

D = (-1)-4\cdot (1)\cdot (4)

D = -17 (Conjugated complex roots)

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Step F

x = 0.5+i\,1.936\,\lor\,x = 0.5-i\,1.936

8 0
3 years ago
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Answer:

a. m=3

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Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

Subtract the 1/2 to get it out of the way (whatever you do on one side of the = sign you have to do to the other)

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