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3 years ago

Anyone please help if u know how to do this

Mathematics

1 answer:

OleMash [197]3 years ago

5 0

I believe it doesnt exist because every one # on the left doesnt have a different # on the right..

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The midpoint of AB is M(0, -3). If the coordinates of A are (6, -5), what are the

ELEN [110]

Answer:

(-6,-1)

Step-by-step explanation:

let b be x2,y2

then apply mid point formula

x=(x1+x2)/2

y=(y1+y2)/2

5 0

3 years ago

Jenna wants to make a park bench as part of her family's miniature railroad train display. If the display is built to scale wher

Savatey [412]

Answer:

8cm

Step-by-step explanation:

2 cm =1 ft so if i multiply it by 4ft, and remember 2 cm =1 ft so 2×4=8

8cm

6 0

2 years ago

Questions 2-7 will all be in regards to this data set:Observation X Y1 20 302 23 353 28 404 26 385 24 376 32 457 35 508 24 349 3

Tomtit [17]

Answer:

r =0.4437

Step-by-step explanation:

We have the follwoing dataset:

X: 20,23,53,4,24,32,35,24,31,23

Y: 30,35,40,38,37,45,50,34,42,32

n=10

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

n=10 $\sum x = 269, \sum y = 383, \sum xy = 10609, \sum x^2 =8645, \sum y^2 =15007$

Th excel figure attached shows the calculations for each sum.

$r=\frac{10(10609)-(269)(383)}{\sqrt{[10(8645) -(269)^2][10(15007) -(383)^2]}}=0.4437$

So then the correlation coefficient would be r =0.4437

3 0

3 years ago

Please help me with this question <br><br> image attached

Dmitry [639]

THE answer would be 38. letter C.

4 0

2 years ago

5trig review please help me

snow_lady [41]

Answer:

Is A

Step-by-step explanation:

4 0

2 years ago

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