anonymous
  • anonymous
The midpoint of line UV is (5, -11) The coordinates of one endpoint are U(3, 5) Find the cordinated of endpoint V. (((PLEASE HELP IVE BEEN STUCK ON THIS FOR 20 MINS)))
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@AlexandervonHumboldt2 @I_Luv_Skittles @Defiance @freckles
anonymous
  • anonymous
explain it too please.
anonymous
  • anonymous
will medal and fan.

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freckles
  • freckles
so the midpoint we need to think averages the average of two numbers is the sum of those numbers divided by 2 the x coordinate of the midpoint is equal to the sum of the x-coordinates of the endpoint divided by 2 the y coordinate of the midpoint is equal to the sum of the y-coordinates of the endpoint divided by 2
freckles
  • freckles
\[5=\frac{3+x}{2} \\ -11=\frac{5+y}{2}\]
Defiance
  • Defiance
Would help but seems freckles has it ;).
freckles
  • freckles
solve the equations
freckles
  • freckles
I forgot to make the word endpoint plural oh well
anonymous
  • anonymous
what is x??? how do I do 3+x if I dont know what x is where did you get x from??
freckles
  • freckles
did you read the descriptions above?
freckles
  • freckles
the "x-coordinate of the midpoint" is equal to the "sum of the x-coordinates of the endpoints" "divided by 2"
freckles
  • freckles
V is a point in the form (x,y)
freckles
  • freckles
the x-coordinate of V is x the y-coordinate of V is y since I chose V to be the point (x,y)
anonymous
  • anonymous
I get that now but I dont understand the divison part??? can you just write everything out for me to read please
freckles
  • freckles
I'm sorry I thought I did... Can you tell me what you don't understand? Like the division? To find the average of two numbers... You do the sum of those numbers and then you divide 2.
anonymous
  • anonymous
theyre numbers on a graph tho so I dont get it
freckles
  • freckles
So if I told you the average of x and 3 is 5 ? This doesn't make sense how I got this: \[\frac{x+3}{2}=5?\]
anonymous
  • anonymous
Youre saying the answer is 5?
anonymous
  • anonymous
Im really bad at this kinda stuff
freckles
  • freckles
no you are looking for V and V is a point on the cartesian plane
freckles
  • freckles
you are looking for the point (x,y)
anonymous
  • anonymous
so the x cord is 5?
freckles
  • freckles
you are given by your question the following to find x and y: The average of x and 3 is 5. The average of y and 5 is -11.
freckles
  • freckles
how did you x is 5?
anonymous
  • anonymous
so its (5, -11) ?
freckles
  • freckles
the midpoint is not what we are looking for
freckles
  • freckles
I already said we are looking for V , one of the endpoints which I called (x,y)
anonymous
  • anonymous
this is taking so long.. can you just explain everything and help me with the answer
freckles
  • freckles
I'm trying too... so what do you not understand about the following equations: \[5=\frac{3+x}{2} \\ -11=\frac{5+y}{2}\]
freckles
  • freckles
all i did there was apply the average thing I mentioned
anonymous
  • anonymous
how do I add 3 to x and 5 to y..
freckles
  • freckles
because that is all the midpoint is is averaging
freckles
  • freckles
you solve for x and y
freckles
  • freckles
multiply both sides by 2
anonymous
  • anonymous
so its 3 and 12.5?
freckles
  • freckles
don't understand how you got that did you try multiplying both sides of the equation(s) by 2?
anonymous
  • anonymous
I did then divided them
freckles
  • freckles
\[5=\frac{3+x}{2} \\ \text{ multiply both sides by 2 } \\ 10=3+x \\ \text{ now isolate } x\]
anonymous
  • anonymous
can you tell me the answer I dont get it my teacher will help me tomorrow
freckles
  • freckles
so you don't want to try to subtract 3 on both sides to isolate x?
anonymous
  • anonymous
it would just be x over 2 ....
freckles
  • freckles
you do understand we had 5=(3+x)/2 then I asked you to multiply 2 on both sides giving us 10=3+x the last step to find the x-coordinate of v is to subtract 3 on both sides 10-3=x why are you doing something different from what I suggest?
freckles
  • freckles
now try solving for y coordinate of V -11=(5+y)/2
freckles
  • freckles
it is the same kind of steps we went through to solve for x
anonymous
  • anonymous
my computer stopped working but can you just tell me it
anonymous
  • anonymous
Ive spent over an hour on one problem...
anonymous
  • anonymous
@freckles
anonymous
  • anonymous
ANYONE PLEASE :( IVE SPENT AN HOUR+ ON THIS QUESTION.... @*louisa* @perii224 @AlexandervonHumboldt2 @mrqueest
anonymous
  • anonymous
@Vocaloid
anonymous
  • anonymous
please...
Vocaloid
  • Vocaloid
start with the x-coordinates (x+3)/2 = 5 solve for x
anonymous
  • anonymous
can you just give me the answer :/ i really dont get it my teacher will help me tomorrow. Ive spent over an hour on this...
Vocaloid
  • Vocaloid
start by multiplying both sides by 2 (x+3)/2 * 2 = ?
anonymous
  • anonymous
4
Vocaloid
  • Vocaloid
nope, not quite... hint: A/2*2 = A (x+3)/2*2 = ?
anonymous
  • anonymous
2*2 is 4
Vocaloid
  • Vocaloid
does this make it more clear?|dw:1443724308435:dw|
anonymous
  • anonymous
I DONT KNOW WHAT THIS MEANS AHHHHHH
Vocaloid
  • Vocaloid
just follow the pattern|dw:1443724350579:dw|
anonymous
  • anonymous
um I dont know what youre talking about can you just tell me it or Ill get it wrong I dont have the time to spend any more time on this one question...
anonymous
  • anonymous
@Vocaloid

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