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marshall27 [118]
2 years ago
15

Quisssssssss !!!!x + 2x + 9y - 7y​

Mathematics
2 answers:
konstantin123 [22]2 years ago
5 0

Solution Steps

x+2x+9y−7y

Combine x and 2x to get 3x.

3x+9y−7y

Combine 9y and −7y to get 2y.

3x+2y

fomenos2 years ago
4 0
<h2>{\orange {\boxed {\colorbox {black} {\orange {King\:Brainly01}}}}}</h2>

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x + 2x + 9y - 7y

3x + ( 9y - 7y )

3x + 2y

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Nadya [2.5K]

Answer:

The probability that the average score of the 49 golfers exceeded 62 is 0.3897

Step-by-step explanation:

The average score of all golfers for a particular course has a mean of 61 and a standard deviation of 3.5

\mu = 61

\sigma = 3.5

We are supposed to find he probability that the average score of the 49 golfers exceeded 62.

Formula : Z=\frac{x-\mu}{\sigma}

Z=\frac{62-61}{3.5}

Z=0.285

Refer the z table for p value

p value = 0.6103

P(x>62)=1-P(x<62)=1-0.6103=0.3897

Hence the probability that the average score of the 49 golfers exceeded 62 is 0.3897

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