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2 years ago

16. Find the point that partitions AB in the ratio 1:3 from A to B if A(-4,-7) and B (12,5).

Mathematics

2 answers:

Feliz [49]2 years ago

8 0

Answer:

Step-by-step explanation:

Paladinen [302]2 years ago

3 0

Answer:

$(0, 3)$

Step-by-step explanation:

To split AB in the ratio 1:3, we must find the midpoint of the line AM, where M is the midpoint of AB.

$M=((-4+12)/2, (-7+5)/2)=(8/2, -2/2)=(4, -1)$

Midpoint of AM: $((4+-4)/2, (7+-1)/2)=(0/2, 6/2)=(0, 3)$

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Need some help Appreciate any help Take a look at the screenshot

malfutka [58]

Answer:

y = -1/2x+2

Step-by-step explanation:

Two points on the line are (0,2) and (4,0)

We can find the slope

m = (y2-y1)/(x2-x1)

= (0-2)/(4 -0)

= -2/4

- 1/2

We know the y intercept is 2 since it crosses the y axis at 2

The slope intercept form is

y = mx+b where m is the slope and b is the y intercept

y = -1/2x+2

8 0

3 years ago

Read 2 more answers

A health research institute collects information from 20 individuals on the number of years they have spent smoking cigarettes,

olga55 [171]

The correlation coefficient of the health research institute data measures the relationship between the age and the years of the smokers

The correlation coefficient is 0.53

<h3>How to calculate the correlation coefficient</h3>

The correlation coefficient (r) is calculated as:

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

Using the given parameters, we have:

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1257^2][20 * 836 - 116^2}}$

Evaluate the exponents

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1580049][20 * 836 - 13456}}$

Evaluate the products

$r = \frac{164980 - 145812}{\sqrt{[1976460 - 1580049][16720 - 13456}}$

Evaluate the differences

$r = \frac{19168}{\sqrt{[396411*3264}}$

Evaluate the product

$r = \frac{19168}{\sqrt{1293885504}}$

Evaluate the root

$r = \frac{19168}{35970.6}$

Evaluate the quotient

$r = 0.53$

Hence, the correlation coefficient is 0.53

Read more about correlation coefficient at:

brainly.com/question/1564293

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2 years ago

Find <img src="https://tex.z-dn.net/?f=%5Csf%20%5Cdfrac%7Bdy%7D%7Bdx%7D" id="TexFormula1" title="\sf \dfrac{dy}{dx}" alt="\sf \d

faust18 [17]

Hey there mate!

Please check the attached answer of picture for explanation.

$Have \: a \: great \: day! \: :)$

8 0

2 years ago

Read 2 more answers

Fred has 230 animals at his zoo. Grace at 349 more animals in her zoo than Fred has. how many animals do they have altogether? T

WARRIOR [948]

Step-by-step explanation:

okay so im in 8th grade and i just worked the problem out and i got , 809 ,

first you add 230 + 349 to see how much she has in her farm

she has 579, then you add 579 because she has that many , and he has 230 so you add 579 +230 and tou get 809

work:

230

+349

----------

579

+230

---------

809

hope i helped!!

4 0

3 years ago

I need help with math please

ASHA 777 [7]

Answer:

greater than cb and less than ab ig

7 0

3 years ago