Answer:
Hello! Your answer is BELOW
Step-by-step explanation:
The best answer to the question that is being stated above would be letter B. The graph of a function never has two different points with the same x-coordinate because the input value of each of the points is mapped to a single output value in the graph.
Hope I helped! Hope you make an 100%
-Amelia♥
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Answer:
24 boxes
Step-by-step explanation:
The processor knows that the standard deviation of box weight is 0.5 pound
![\sigma = 0.5](https://tex.z-dn.net/?f=%5Csigma%20%3D%200.5)
We are supposed to find How many boxes must the processor sample to be 95% confident that the estimate of the population mean is within 0.2 pound
Formula of Error=![z \times \frac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=z%20%5Ctimes%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
Since we are given that The estimate of the population mean is within 0.2 pound
So, ![z \times \frac{\sigma}{\sqrt{n}}=0.2](https://tex.z-dn.net/?f=z%20%5Ctimes%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%3D0.2)
z at 95% confidence level is 1.96
![1.96 \times \frac{0.5}{\sqrt{n}}=0.2](https://tex.z-dn.net/?f=1.96%20%5Ctimes%20%5Cfrac%7B0.5%7D%7B%5Csqrt%7Bn%7D%7D%3D0.2)
![1.96 \times \frac{0.5}{0.2}=\sqrt{n}](https://tex.z-dn.net/?f=1.96%20%5Ctimes%20%5Cfrac%7B0.5%7D%7B0.2%7D%3D%5Csqrt%7Bn%7D)
![4.9=\sqrt{n}](https://tex.z-dn.net/?f=4.9%3D%5Csqrt%7Bn%7D)
![(4.9)^2=n](https://tex.z-dn.net/?f=%284.9%29%5E2%3Dn)
![24.01=n](https://tex.z-dn.net/?f=24.01%3Dn)
Hence the processor must sample 24 boxes to be 95% confident that the estimate of the population mean is within 0.2 pound
Answer:
4(x+3) = 20
Distrbute
4x+12 = 20
-12 from both sides
4x = 8
divide both sides by 4
x = 2
Step-by-step explanation:
Her average rate is .615 miles per minute or about 37 miles per hour