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Mathematics 8 Online
OpenStudy (anonymous):

Find the x value for point F such that DF and EF form a 1:3 ratio. 0.75 −1 2 −1.75

OpenStudy (anonymous):

OpenStudy (anonymous):

@Jim766 @imconfused33 @iambatman please help! I will write testimonial and give medal

OpenStudy (jim766):

what is point D? what is point E?

OpenStudy (jim766):

can you look at the picture and name the two end points (X, Y)

OpenStudy (jim766):

helloooo

OpenStudy (anonymous):

sorry not in that class yet

OpenStudy (anonymous):

sorry, and yes give me 3 minutes lol

OpenStudy (anonymous):

and thanks tho! @imconfused33

OpenStudy (anonymous):

D is -3, -3 E is 2, 4

OpenStudy (anonymous):

@Jim766

OpenStudy (anonymous):

@Jim766 ???????

OpenStudy (jim766):

set it up like this, the last point always goes first 3 (-3, -3) - 1 ( 2, 4 ) now mult across, like you are distributing

OpenStudy (jim766):

what is 3 * -3? and 3 * -3

OpenStudy (anonymous):

So I multiply 3 with the 2 & 4 ?

OpenStudy (jim766):

no, the 1 times the 2 and the 4

OpenStudy (anonymous):

-9 and -9 and then 2 and 4

OpenStudy (jim766):

you will end up with (-9, -9) ( 2, 4 )

OpenStudy (jim766):

now add straight down

OpenStudy (anonymous):

Alright then what

OpenStudy (anonymous):

OH so -7 and -5

OpenStudy (jim766):

-9 + 2 and -9 + 4

OpenStudy (anonymous):

ok which is -7 & -5

OpenStudy (jim766):

(-7, -5) right now divide each by the ratio added together 1:3 , 1+ 3 = 4

OpenStudy (jim766):

-7/4, -5/4

OpenStudy (jim766):

or rather (-7/4, -5/4)

OpenStudy (jim766):

all they care about is the x number.

OpenStudy (jim766):

what is -7/4 ?

OpenStudy (anonymous):

yayy -1.75! thanks!!!!!

OpenStudy (jim766):

it is like finding mid point, but the ratio makes it different

OpenStudy (anonymous):

ohh I see! and I have one small Q about right triangle

OpenStudy (anonymous):

A right triangle has three sides with the same length two sides that are parallel at least two congruent sides two sides that are perpendicular

OpenStudy (jim766):

what is a right triangle?

OpenStudy (jim766):

draw one and look at it...

OpenStudy (anonymous):

I know what it is, and I didn't have to draw it either. Just wanted to know if the 3rd answer choice is corrrect or not ....

OpenStudy (jim766):

it might have 2 congruent sides, but it doesnt have to. What does it have to have?

OpenStudy (anonymous):

right angle ?

OpenStudy (anonymous):

oh perpendicular?

OpenStudy (jim766):

right...

OpenStudy (anonymous):

K, so D, ok thanks

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