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weeeeeb [17]
3 years ago
11

The square pyramid pictured below has a surface area of 9 m 6 m 6 m

Mathematics
2 answers:
disa [49]3 years ago
6 0
You should post with a picture
Genrish500 [490]3 years ago
5 0
Hey,just to let you know that they is no picture as I can’t answer it.
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mote1985 [20]

Answer:

n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36  

And rounded up we have that n=8068

Step-by-step explanation:

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

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

We want for this case a 95% of confidence desired, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The margin of error for this case is ME =\pm 0.01 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)  

The estimated proportion for this case is \hat p=0.3. And replacing into equation (b) the values from part a we got:

n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36  

And rounded up we have that n=8068

7 0
3 years ago
Please help me please
irina [24]

Answer: YOU WILL NEVER SUCCEED IF YOU DON’T TRY

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What is the area of triangle ABC Round to the nearest tenth of a square unit
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Where’s the triangle, isn’t there supposed to be a picture with the question

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Answer:

13= 10+3

Step-by-step explanation:

I hope this helps

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