Question

Find the distance between the following pairs of points: (-4,3),(2,5)

Answer 1

\[d=\sqrt{(-4-2)^2+(5-3)^2}\]

Answer 2

You know everything about this question!
What seems to be the problem here @Algebra2013 ? :D

Answer 3

I got \[\sqrt{40} for an answer but \it is wrong???\]

Answer 4

I came up with 40 squared which is wrong? please help

Answer 5

Are you sure those ARE the points?
Because sqrt 40 IS THE RIGHT ANSWER! :D

Answer 6

one moment

Answer 7

correct points

answers are:::::
\[2\sqrt{10} , \sqrt{28} , \sqrt{8} , or 10\]

Answer 8

Anyone come up with one of these??

Answer 9

2 sqrt 10 is correct! :)

Because sqrt 40 can be written as

\[\sqrt{2*2*10}

= 2 * \sqrt{10}\]

Understood? :)

Answer 10

Yes, thank you for the much needed help

Answer 11

:)

Answer 12

Mary and Jane are both at the gas station at Hill and Elm. From the station, Mary drives 10 miles east and Jane drives 15 miles south. Find the distance between Mary and Jane

Answer 13

Do you know Pythagorus' theorem?

Answer 14

midpoint??

Answer 15

\[=(\frac{ x+X }{ 2 }),(\frac{ y+y }{ 2 })=\]

Answer 16

No No Pythagorus' theorem?
Ever heard of it or not? :/

Answer 17

No

Answer 18

is there a formula?

Answer 19

Did you get 5 for an answer?

Answer 20

I suggest you go through this before the formula! :)
http://www.mathwarehouse.com/geometry/triangles/how-to-use-the-pythagorean-theorem.php

Answer 21

ok there are only 2 numbers we can use which are 10 miles east and 15 miles south

Answer 22

Yes!
And they form a right angle inbetween them. :)
Read the page I sent you.

Answer 23

\[10^{2}+15^{2}=X\]

Answer 24

10^2+15^2=X^2

Answer 25

Not X

X^2 :D

Answer 26

I got 18

Answer 27

=325
(18)(18)=325

x=18

Answer 28

\[5\sqrt{13}, -5\sqrt{13}\]

Answer 29

got it thank you very much

Answer 30

Yes nearly very close to 18!! :D
:)

Answer 31

hahahaha

Answer 32

if the midpoint of two points is (5,-1) and one of the points is (4,-3), find the other point

Answer 33

Just use the formula you told me!
And take the other point as say (x,y)
Understood? :)

Answer 34

one moment

Answer 35

9 doesn't go into 2????

Answer 36

\[\frac{ 5+4 }{ 2}, \frac{ -1+-3 }{ 2 }\]

Answer 37

See take it like you told me yourself

\[Midpoint = (\frac{ x1 + x2}{ 2 } , \frac{ y1 + y2 }{ 2 })\]

Now let the other point be = (x,y)

So we can also write the above equation as
\[(5,-1) = (\frac{ 4 + x}{ 2 } , \frac{ -3 + y }{ 2 })\]

So

\[5 = \frac{ 4+x }{ 2 } AND -1 = \frac{ -3+y }{ 2 }\]\

Answer 38

x=6, y=1

Answer 39

(6,1)

Answer 40

Yes!
You got it! :D

Answer 41

Thank you so much!!!!!!!!!!!

Answer 42

:)

Answer 43

A painter is going to paint the trim of a window located 18 feet from the ground. If the base of the ladder is placed 9 feet from the side of the house, how long does the ladder need to be to reach the window?

Answer 44

Use Pythagorus here too.
See @Algebra2013 I cannot help you with all questions.
You have to figure most out yourself. :)