Mathematics
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OpenStudy (anonymous):
Find the distance between the points (4,-3) and (-6,2). HELP ME PLEASE
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OpenStudy (ghazi):
\[\sqrt{(y2-y1)^2+(x2-x1)}\] use this
OpenStudy (anonymous):
Use distance formula:
\[Distance = \sqrt{(x_2 - x_1)^2 + (y_2 -y_1)^2}\]
OpenStudy (ghazi):
\[\sqrt{(2+3)^2+(-10)^2}\]
OpenStudy (anonymous):
Sooo 25+ 100 then right?
OpenStudy (anonymous):
Go ahead..
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OpenStudy (anonymous):
Sq Rt off 125 is idk haha
OpenStudy (ghazi):
yes
OpenStudy (anonymous):
whats the answer i dont have a calculator handy
OpenStudy (ghazi):
\[\sqrt{125}= 5\sqrt{5}\]
OpenStudy (ghazi):
hope that helps you
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OpenStudy (anonymous):
ok thanksss xD
OpenStudy (ghazi):
:)
OpenStudy (anonymous):
How do i find the mind point between (-1,4) and (-2,-9)?
OpenStudy (ghazi):
use mid point formula
OpenStudy (anonymous):
\[\sqrt{125} = \sqrt{\color{green}{\underline{5 \times 5}} \times5 } = 5 \sqrt{5}\]
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OpenStudy (anonymous):
which is :)?
OpenStudy (anonymous):
Add the x coordinates and then divide them by 2..
OpenStudy (ghazi):
(-1+2)/2 and (4-9)/2
OpenStudy (anonymous):
Similarly do for y coordinates...
OpenStudy (anonymous):
so 0.5 and -2.5?
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OpenStudy (ghazi):
yes
OpenStudy (anonymous):
But that isnt an answer :(
OpenStudy (ghazi):
then it must be (1/2, -5/2)
OpenStudy (ghazi):
sorry x coordinate is -3/2
OpenStudy (anonymous):
the answers are
(1.5,-5.5)
(-2.5,2.5)
(-1.5,-2.5)
(1,6)
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OpenStudy (anonymous):
well those are the options
OpenStudy (ghazi):
C
OpenStudy (anonymous):
M is the midpoint of segment AB. Find the coordinates of B given A(-5,1) and M(-2,4)
OpenStudy (anonymous):
Help help :)
OpenStudy (anonymous):
@ghazi
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OpenStudy (ghazi):
add it and divide it by 2
OpenStudy (anonymous):
So just add -5+1? and the other one too ?
OpenStudy (ghazi):
(-7/2)(5/2)
OpenStudy (ghazi):
(-5-2)/2 and (4+1)/2
OpenStudy (anonymous):
oHh ohh ok
so -6,4.5?
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OpenStudy (ghazi):
no...(-3.5, 2.5)
OpenStudy (anonymous):
Oh sorry i did it wrong -__-
OpenStudy (anonymous):
In which region of angle CAB does point B lie?
OpenStudy (anonymous):
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