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3 years ago

What is 3 to the square root of 125 to the 4th power

Mathematics

1 answer:

Sonja [21]3 years ago

4 0

Answer:

Step-by-step explanation:

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The water diet requires you to drink two cups of water every half hour from the time you get up until you go to bed, but otherwi

Elan Coil [88]

Answer:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

Step-by-step explanation:

For this case we have the following info given:

Weight before diet 180 125 240 150

Weight after diet 170 130 215 152

We define the random variable $D = before-after$ and we can calculate the inidividual values:

D: 10, -5, 25, -2

And we can calculate the mean with this formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

And the deviation with:

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

And after replace we got:

$\bar D= 7, s_d = 13.638$

And the confidence interval for this case would be given by:

$\bar D \pm t_{\alpha/2} \frac{s_d}{\sqrt{n}}$

The degrees of freedom are given by:

$df = n-1= 4-1=3$

For the 95% of confidence the value for the significance is $\alpha=0.05$ and the critical value would be $t_{\alpha/2}= 3.182$ . And replacing we got:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

6 0

2 years ago

Really easy question please help please look at picture

Thepotemich [5.8K]

Answer: D
-2.9a+6.8+4.4a-7.3
[-2.9a+4.4a]=1.5a
[6.8-7.3]=-0.5
1.5a-0.5

6 0

3 years ago

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The ratio of adults to children attending a new exhibit at the museum was found to be 8:5. Based on this ratio, if 390 people at

Zinaida [17]

$8x+5x=390\\
13x=390\\
x=30\\\\
5x=5\cdot30=\boxed{150}$

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3 years ago

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Graph the image of M(<br> –<br> 9,1) after a rotation 270° counterclockwise around the origin.

Masja [62]

The points of (9,1) after a 270 degree counterclockwise rotation would be (1,-9)
Hope this helps!

3 0

2 years ago

Describe how to solve -5x = 30

Ivan

-5x divided by -5x to cancel the out the x and then 30 divided by -5, hope this helped!

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2 years ago

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