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Rom4ik [11]
2 years ago
6

A football team carried out a report to see the impact of stretching on preventing injury. Of the 45 footballers in the squad 36

stretch regularly. Of those who stretch, 6 got injured last year. There was a total of 10 injured players last year.
The results can be presented in a frequency tree. What fraction of players who don't stretch get injured?
Mathematics
1 answer:
Travka [436]2 years ago
3 0

The fraction of players who don't stretch and get injured = 4/9.

The frequency tree is shown in the image attached.

The total number of footballers = 45.

The total number of footballers who stretch = 36.

Therefore, the number of footballers who don't stretch = 45 - 36 = 9.

The total number of injured footballers = 10.

The number of injured footballers from the players who stretch = 6.

Therefore, the number of injured footballers from the footballers who don't stretch = 10 - 6 = 4.

The total number of footballers who don't get injured = 45 - 10 = 35.

The number of footballers who stretch and don't get injured = 36 - 6 = 30.

The number of footballers who don't stretch and don't get injured = 9 - 4 = 5.

Therefore, the frequency tree can be shown in the image attached.

The fraction of players who don't stretch and get injured = 4/9.

Learn more about frequency trees at

brainly.com/question/12526155

#SPJ10

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Answer:

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Step-by-step explanation:

Given : A right triangle 'A'  hypotenuse length of x+4 and a leg of x,

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Solution :

Triangle A,

Hypotenuse: x+4

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Triangle B,  

Hypotenuse: 3y

Leg: y+4  

Since the triangle A and B are congruent so, the sides of triangles are equal.

x+4=3y    (Hypotenuse are equal)  ..........[1]

and x=y+4   (Legs are equal)   ..........[2]

Solving the equation of system,

Put the value of x from [2] in [1],

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y+4+4=3y

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Verifying for the values of x and y:

Triangle A,

Hypotenuse: x+4=8+4=12

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