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3 years ago

Amar rakes leaves for his neighbors to eam money. He eamed 64 dollars after 8 hours of work.

Mathematics

1 answer:

ladessa [460]3 years ago

8 0

Answer:

Good for Amar but what’s the question

Step-by-step explanation:

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Determine the next term in the geometric sequence. -1, -6, -36, -216, ??

nordsb [41]

You are multiply by 6 each time.

The next term is -216 x 6

-216 x 6= -1296

-1296 is your answer

hope this helps

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3 years ago

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What is the equation of the best-fitting regression line? Find this in two ways. First, using the regression analysis part of th

Lemur [1.5K]

Step-by-step explanation:

Regression analysis is used to infer about the relationship between two or more variables.

The line of best fit is a straight line representing the regression equation on a scatter plot. The may pass through either some point or all points or none of the points.

Method 1:

Using regression analysis the line of best fit is: $y=\alpha +\beta x+e$

Here α = intercept, β = slope and e = error.

The formula to compute the intercept is:

$\alpha =\bar y-\beta \bar x$

Here $\bar y$ and $\bar x$ are mean of the y and x values respectively.

$\bar y=\frac{\sum y_{i}}{n} \\\bar x=\frac{\sum x_{i}}{n}$

The formula to compute the slope is:

$\beta =\frac{\sum (x-\bar x)(y - \bar y)}{\sum (x=\bar x)^{2}}$

And the formula to compute the error is:

$e=y-\alpha -\beta x$

Method 2:

The regression line can be determined using the descriptive statistics mean, standard deviation and correlation.

The equation of the line of best fit is:

$(y-\bar y)=r\frac{\sigma_{x}}{\sigma_{y}} (x-\bar x)$

Here r = correlation coefficient = $r=\frac{Cov (x,y)}{\sqrt{\sigma^{2}_{x}\sigma^{2}_{y}} }$

$\sigma_{x}$ and $\sigma_{y}$ are standard deviation of x and y respectively.

$\sigma_{x}=\frac{1}{n}\sum (x-\bar x)^{2} \\\sigma_{y}=\frac{1}{n}\sum (y-\bar y)^{2}$

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3 years ago

An animal shelter has $2500 in its reserve fund. The shelter charges $40 per animal placement and would like to have at least $4

densk [106]

Answer:

Step 1

Write and solve the inequality:

2,500 + 40a ≥ 4,000, or 40a ≥ 1,500

a ≥ 37.5

Step 2

If the shelter places 30 cats and 10 dogs,

or 40 animals, that will be enough to meet

its goal, because a = 40 is a solution to the

inequality a ≥ 37.5.

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3 years ago

What is the slope of the line passing through the points (1, -5) and (4,1)

never [62]

The slope of the line passing through (1,-5) and (4,1) is 2

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3 years ago

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During a 3 day street fair, 159 woman and 177 men attended. At that rate, how many more men than women will attend a 7 day stree

Stella [2.4K]

awnser: 42

step by step:

1. find the racio of both

2.multiply the awnsers by 7

3.finally subtract

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3 years ago

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