What is the answer to X^2-2X+5=0 rounded to nearest hundreth

1 answer:

8 0

First you input the equation into the quadratic formula:
__________
x=−(−2)±√(−2)2−4(1)(5)
 -----------------------------
2(1)
Next you simplify the formula:
___
x=2±√−16
 ------------
2

This problem has no real solutions.

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The average score of all golfers for a particular course has a mean of 61 and a standard deviation of 3.5 . Suppose 49 golfers p

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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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