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3 years ago

Given the functions determine the following! Please help! Due tonight!

Mathematics

1 answer:

Pani-rosa [81]3 years ago

6 0

Answer:

i think that i will be 9m/9

Step-by-step explanation:

if its not correct im so sorry like i said im only a freshman in high school

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Need help Pls answer if you know.....

snow_tiger [21]

Answer:

3.6 cups of wild bird seed

Step-by-step explanation:

30% x 12 cups

12 * .3

= 3.6

8 0

3 years ago

Help with this ASP I’ll give best awards for revision I’m stuck <br><br> It’s substitution

den301095 [7]

P=3W+D
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8 0

3 years ago

Read 2 more answers

the price of a stock decreasing rupees 45 per day for the four constitutive days. what was the total change in value of the stoc

Simora [160]

Hi,

45 per day

4 day period

45 * 4 = 180

180 rupees

4 0

3 years ago

Write the expression in complete factored form q^2(p+1)+3(p+1)

ch4aika [34]

First expand the brackets which will give you
$pq {}^{2} + q { }^{2} + 3p \: + 3$
then factor them
$(q {}^{2} + 3)(p + 1)$

8 0

3 years ago

Read 2 more answers

Use the given data to find a regression line that best fits the price-demand data for price p in dollars as a function of the de

Rufina [12.5K]

Answer:

$m=-\frac{7600}{8250}=-0.921$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{550}{10}=55$

$\bar y= \frac{\sum y_i}{n}=\frac{1042}{10}=104.2$

And we can find the intercept using this:

$b=\bar y -m \bar x=104.2-(-0.921*55)=104.707$

So the line would be given by:

$y=-0.921 x +104.707$

Step-by-step explanation:

For this case we have the following data given:

Demand (x): 10,20,30,40,50,60,70,80,90,100

Price (y): 141 , 133,126, 128,113,97, 90, 82,79,53

We want to construct a linear model like this:

$y = mx +b$

For this case we need to calculate the slope with the following formula:

$m=\frac{S_{xy}}{S_{xx}}$

Where:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

So we can find the sums like this:

$\sum_{i=1}^n x_i =550$

$\sum_{i=1}^n y_i =1042$

$\sum_{i=1}^n x^2_i =38500$

$\sum_{i=1}^n y^2_i =115882$

$\sum_{i=1}^n x_i y_i =49710$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=38500-\frac{550^2}{10}=8250$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}=49710-\frac{550*1042}{10}=-7600$

And the slope would be:

$m=-\frac{7600}{8250}=-0.921$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{550}{10}=55$

$\bar y= \frac{\sum y_i}{n}=\frac{1042}{10}=104.2$

And we can find the intercept using this:

$b=\bar y -m \bar x=104.2-(-0.921*55)=104.707$

So the line would be given by:

$p(x)=-0.921 x +104.707$

4 0

3 years ago