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2 years ago

Positive ÷ positive = ?

Mathematics

1 answer:

GaryK [48]2 years ago

6 0

Answer:

positive

Step-by-step explanation:

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Which points are generated by the function y = -5x + 2? Check all that apply. (2, 8) (2, -8) (13, 3) (3, -13)

Zanzabum

(2,-8) (3,-13) because if you plug them all in there the only ones that come out right

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3 years ago

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matrenka [14]

Answer:

Step-by-step explanation:

D.works many year for a nation

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2 years ago

Expand & simplify<br><br> (3x-4)^2 - (x+1)(x-1)<br><br> Please anyone? I'm really bad at maths-

Mnenie [13.5K]

The answer would be 8x^2-24x+17

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2 years ago

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

Plz help. due tomorrow!

Aleonysh [2.5K]

What idk jk sorry trying to be funny like always but what is the question I have no picture

3 0

3 years ago