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Anna007 [38]
3 years ago
13

What is -4^2? thanks!

Mathematics
2 answers:
Juliette [100K]3 years ago
8 0
That 2 means we multiply 4 by itself 2 times, and -4 x -4 = positive 16.
~Deceptiøn
gizmo_the_mogwai [7]3 years ago
4 0
La respuesta es menos 16

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Linwood has 38 nickles 32 dimes 11 quarters and 17 fifty cent pieces how much money does he have ?
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The following are the temperatures of 10 days in winter in °C. -5, 1, -2, 7, -3, 9, 7, -5, -2, -5 Work out the mean temperature.
Citrus2011 [14]

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​3 ​/​10 ​​ = ​9 /​k ​​ what is k
NemiM [27]
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3 years ago
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zhenek [66]

Answer:

s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s= 0.286

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SE= \frac{0.286}{\sqrt{4}}= 0.143

Step-by-step explanation:

For this case we have the following dataset given:

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We can assume that the distribution for the sample mean is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And the standard error for this case would be:

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And we can estimate the deviation with the sample deviation:

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And replacing we got:

s= 0.286

And then the estimator for the standard error is given by:

SE= \frac{0.286}{\sqrt{4}}= 0.143

4 0
3 years ago
The length of the room is 3 times the width and the total area of the room is 27 square meters. What is the length of the living
Vika [28.1K]
l=3w\\
lw=27\\\\
3w\cdot w=27\\
3w^2=27\\
w^2=9\\
w=3 \vee w=-3\\
-3\not\in\mathbb{N}\\\\
l=3\cdot3\\
l=9

7 0
3 years ago
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