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Lady bird [3.3K]
3 years ago
7

Calculate surface area of pyramids

Mathematics
1 answer:
joja [24]3 years ago
3 0
A=138.53 in
Use the formula and replace the variables with the length, width, and height to get the answer

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Super easy geometry please help
goblinko [34]
Ok first u multiple the numbers and divide
3 0
3 years ago
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10 Students were surveyed.
katrin2010 [14]

Answer:mode

Step-by-step explanation:5+4+9+9+3+75+1=mode

3 0
2 years ago
I need some help with this one. Please give it a go! Thank you for your time!
LekaFEV [45]

Answer:

A) 3x^{2} - x - 4

B) -3x^{2} -4x -5

Step-by-step explanation:

5 0
2 years ago
Which expression should you simplify to find the 90% confidence interval,
bogdanovich [222]

Answer:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is \hat p=0.45

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025.

And the critical value is:z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the true population proportion is interest is given by this formula:  

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

Replacing the values provided we got:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

5 0
3 years ago
A bake shop uses 1 1/3 cup of<br> milk for each batch of<br> cupcakes.
Travka [436]

Answer:

Step-by-step explanation:

1 batch=       1 and 1/3 cups

2 batches=  2 and 2/3 cups

3 batches=  4 cups

4 batches=  5 and 1/3 cups

8 0
2 years ago
Read 2 more answers
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