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topjm [15]
3 years ago
7

The temperature in Minneapolis was

Mathematics
2 answers:
hjlf3 years ago
8 0
-9°F < t
Should be it
Andre45 [30]3 years ago
8 0

Answer:

x>-9F

Step-by-step explanation:

x is all possible temperatures greater than -9F

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A triangular flag has an area of 187.5 square inches. The base of the flag measures 25 inch How tall is the triangular flag?
djyliett [7]
To find the height, you would do the area divided by the base, or in this case,187.5 / 25 which equals 7.5 inches.  Hope this helped!
3 0
3 years ago
A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat
Marizza181 [45]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.04 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume that a prior estimation for p would be \hat p =0.5 since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

5 0
3 years ago
Help please! Due this class 20 minutes left!
Anarel [89]

Answer:

Step-by-step explanation:

8 0
2 years ago
How do you compare two ratios
serious [3.7K]

Answer:

how you can divide them I believe

Step-by-step explanation:

you need to divided both of them to see a difference

7 0
2 years ago
Rachel charges $7 to rake leaves in her neighborhood.Last week,she raked leaves in 3 yards.She put 2/3 of her savings account.Ho
Phantasy [73]

Answer:

14

Step-by-step explanation:

7*3=21

2/3 of 21 is 14 so she saved 14 dollars

6 0
3 years ago
Read 2 more answers
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