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Sloan [31]
3 years ago
15

For a science experiment, Ashley removes a cold liquid from a refrigerator and measures its temperature every 1 2 minute. Ashley

finds that the temperature increases by 1 1 4 degrees Fahrenheit (°F) between each measurement for three minutes. What is the rate per minute of the temperature increase? A) 5 8 °F per minute B) 3 4 °F per minute C) 1 3 4 °F per minute D) 2 1 2 °F per minute
Mathematics
2 answers:
Pavlova-9 [17]3 years ago
8 0

Answer:

The answer is D

Step-by-step explanation:

2

1 /2

°F per minute

1

1 /4

× 2 = 2

1 /2

elena-14-01-66 [18.8K]3 years ago
4 0
The answer will It would be D
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3 years ago
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A marketing researcher wants to find a 96% confidence interval for the mean amount those visitors spend per person per day while
ki77a [65]

Answer:

n=(\frac{2.054(12)}{4})^2 =37.97 \approx 38

So then the minimum sample to ensure the condition given is n= 38

Step-by-step explanation:

Notation

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

\sigma=12 represent the population standard deviation

n represent the sample size  

ME = 4 the margin of error desired

Solution to the problem

When we create a confidence interval for the mean the margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =4 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 96% of confidence interval now can be founded using the normal distribution. The significance is \alpha=1-0.96 =0.04. And in excel we can use this formula to find it:"=-NORM.INV(0.02;0;1)", and we got z_{\alpha/2}=2.054, replacing into formula (b) we got:

n=(\frac{2.054(12)}{4})^2 =37.97 \approx 38

So then the minimum sample to ensure the condition given is n= 38

5 0
3 years ago
9x plus 7 equals 3x plus 8
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The answer is x = 1/6
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Set up an equation (part + part = whole). Solve the equation to find the value of x. 10 + x + x + 20 = 12
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Answer:

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2 years ago
Enter the enter the first four terms of the sequence defined by the given rule assume that the domain of each function is the se
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Answer:

  {1, -9, 56, -269}

Step-by-step explanation:

Evaluate the rule for n=2, 3, and 4 in sequence.

For n=2

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The first four terms of the sequence are {1, -9, 56, -269}.

3 0
3 years ago
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