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3 years ago

Help me, save me!!!!!!!!

Mathematics

2 answers:

Andrei [34K]3 years ago

6 0

Answer:

Step-by-step explanation:

Anni [7]3 years ago

5 0

Answer:

Step-by-step explanation:

Open circle means less than or greater than, and the dot is on -5, so the answer is greater than -5

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If f(x) = -x^2+3x, find (-5)

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The A/= it means the answer is okay.

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2 years ago

What is the equation of the function that is graphed as line a?

Ede4ka [16]

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3 years ago

2/3 to the fourth power

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The correct answer is 16/81. Hope this helps.

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3 years ago

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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:

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

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

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2 years ago

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Alchen [17]

Answer:

38x, 21y, and 24 aka =38x+21y+24

Step-by-step explanation:

the second one is

24a+27b+44

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2 years ago

Read 2 more answers