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bogdanovich [222]
3 years ago
10

What are the zeros of this function?

Mathematics
1 answer:
olga2289 [7]3 years ago
7 0
The answer is B because the points in which the lines hit are x=0 and x=6
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The length of time that an auditor spends reviewing an invoice is approximately normally distributed with a mean of 600 seconds
Bumek [7]
Answer: 11.5% 

Explanation:


Since 1 minute = 60 seconds, we multiply 12 minutes by 60 so that 12 minutes = 720 seconds. Thus, we're looking for a probability that the auditor will spend more than 720 seconds. 

Now, we get the z-score for 720 seconds by the following formula:

\text{z-score} =  \frac{x - \mu}{\sigma}

where 

t = \text{time for the auditor to finish his work } = 720 \text{ seconds}
\\ \mu = \text{average time for the auditor to finish his work } = 600 \text{ seconds}
\\ \sigma = \text{standard deviation } = 100 \text{ seconds}

So, the z-score of 720 seconds is given by:

\text{z-score} = \frac{x - \mu}{\sigma}
\\
\\ \text{z-score} = \frac{720 - 600}{100}
\\
\\ \boxed{\text{z-score} = 1.2}

Let

t = time for the auditor to finish his work
z = z-score of time t

Since the time is normally distributed, the probability for t > 720 is the same as the probability for z > 1.2. In terms of equation:

P(t \ \textgreater \  720) 
\\ = P(z \ \textgreater \  1.2)
\\ = 1 - P(z \leq 1.2)
\\ = 1 - 0.885
\\  \boxed{P(t \ \textgreater \  720)  = 0.115}

Hence, there is 11.5% chance that the auditor will spend more than 12 minutes in an invoice. 
8 0
3 years ago
Which of the following is a radical equation?<br> X+ V5 = 12<br> x² = 16<br> 3+ x^7=13<br> 7-14
MrRissso [65]
The second one is the correct answer
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3 years ago
Can someone please do 1-9
andriy [413]
1-9=-8 is your answer
5 0
3 years ago
Please help!!!!!!!!!!!!!!
Talja [164]

Answer:

6 and 4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Factor -25x - 5.<br> A. -5(5x+1)<br> B. -5(5x^2+1)<br> C. -5(5x^2+2)<br> D. -5x(25x+5)
VARVARA [1.3K]
Factor out common  term - 5 :

- 25 x - 5 = 

- 5 ( 5 x + 1 )

Answer A
5 0
3 years ago
Read 2 more answers
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