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Mathematics 19 Online
OpenStudy (anonymous):

medal!

OpenStudy (anonymous):

G1 bisects <DGH so that m<DGI is x-3 and m<IGH is 2x=13. Find the value of x.

OpenStudy (anonymous):

so let me clarify something m<IGH is 2x=13 so m<IGH = 13?

OpenStudy (anonymous):

and G1 is actually GI or am I misunderstanding something?

OpenStudy (anonymous):

G1 as in the number and im sorry the last part is suppose to be 2x-13.

OpenStudy (anonymous):

Ah I see well have you drawn a diagram of what you are working with?

OpenStudy (anonymous):

well iv tried but im really confused.

OpenStudy (anonymous):

ok that's fine! So the reason why I asked about the G1 thing is I am pretty sure that it should be an I. Do you know what bisects means?

OpenStudy (anonymous):

to divide in two

OpenStudy (anonymous):

You could be right on the I... its hard to read it has an arrow across the top

OpenStudy (anonymous):

Correct! In other words it divides it into equal portions. So the picture should look something like this: |dw:1413263794012:dw|

OpenStudy (anonymous):

does that make sense?

OpenStudy (anonymous):

yes it does

OpenStudy (anonymous):

ok so can you take it from here or do you need more help?

OpenStudy (anonymous):

I still need help please

OpenStudy (anonymous):

ok sure no problem! so if GI bisects <DGH what does that mean for <DGI and <IGH?

OpenStudy (anonymous):

2 separate angles?

OpenStudy (anonymous):

well yes but they are equal!!!

OpenStudy (anonymous):

make sense?

OpenStudy (anonymous):

oh ok yes it does

OpenStudy (anonymous):

alright do you know how to go from here?

OpenStudy (anonymous):

I know they are equal but im still brain dead as to how to find x.. im really sorry.

OpenStudy (anonymous):

haha don't be trust me I have my own problems lol. So you know that they are equal right? But you are also given the equations the correspond to correct?

OpenStudy (anonymous):

yes but I guess that's where im getting confused because they aren't the same but they are equal parts.

OpenStudy (anonymous):

ahhh so why not set them to equal each other since they are supposed to be the same amount of degrees?

OpenStudy (anonymous):

x-3+2x-13?

OpenStudy (anonymous):

haha you added them set them equal to each other!

OpenStudy (anonymous):

lol ok let me try this 3x-15?

OpenStudy (anonymous):

lol I think I lost you somewhere there...ummm so if we set them to equal one another it would be: x - 3 = 2x -13, right?

OpenStudy (anonymous):

yea I got lost lol... ok those are the right numbers for the right angles but they don't equal each other that's where im getting confused.

OpenStudy (anonymous):

why don't they? didn't we say previously that <DGI and <IGH equal each other?

OpenStudy (anonymous):

yes they equal each other .. oh so no matter what the equation they are going to equal?

OpenStudy (anonymous):

YUP! so show me the equation.

OpenStudy (anonymous):

I thought you just showed me.. x-3=2x-13 I have a feeling im totally lost again

OpenStudy (anonymous):

No no no!!! you are right, I just wanted to make sure you got what I was saying during the confusion lol. So what do you do next?

OpenStudy (anonymous):

don't I have to get X on one side like x+2x-3+3=2x-2x+3-13 3x=10

OpenStudy (anonymous):

Correct way of thinking but you have an error in your math. Do it step by step.

OpenStudy (anonymous):

so first move the x's

OpenStudy (anonymous):

x-3=2x-13 x-2x-3=2x-2x-13 x-3=13 x-3+3=13+3 x=16

OpenStudy (anonymous):

you made a mistake in the third line : x -2x = ?

OpenStudy (anonymous):

also (2x-2x -13) = ?

OpenStudy (anonymous):

lol ok im rummy and tired now .. is it suppose to be -x and and ohhh yea -13

OpenStudy (anonymous):

so what does x = to?

OpenStudy (anonymous):

x=-10?

OpenStudy (anonymous):

oh so close. -x-3+3=-13+3

OpenStudy (anonymous):

im gonna beat my head on the keyboard... wait isn't that what I said oh no its -x=-10

OpenStudy (anonymous):

haha lol yeah those negative signs so does everything make sense now?

OpenStudy (anonymous):

yes it does tyvm for all your help lol now I only have 2 more I have to do smh lol

OpenStudy (anonymous):

well I am can help if you want

OpenStudy (anonymous):

that would be great ... post here?

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

The midpoint of UV is (5,-11). The coordinates of one endpoint are U(3,5) Find the coordinates of endpoint V.

OpenStudy (anonymous):

so do you know how you would start this problem?

OpenStudy (anonymous):

im used to the x y graph so im confused on how to graph the points

OpenStudy (anonymous):

ok that's fine! so what exactly are you confused about?

OpenStudy (anonymous):

you say that you are using a x-y graph right?

OpenStudy (anonymous):

yes but its saying UV... do I substitute U(y) v(x)?

OpenStudy (anonymous):

so UV just means that you are a line(technically a segment) called UV so like this: |dw:1413269472098:dw|

OpenStudy (anonymous):

btw that's not where UV actually looks like

OpenStudy (anonymous):

ohhhh ok I get it duhh smh

OpenStudy (anonymous):

im sorry im really not this stupid all the time just with geometry smh

OpenStudy (anonymous):

haha I don't think you are stupid, geometry just isn't your strong suit. My personal weakness is writing. But anyways we know that the mid point of UV is (5,-11) and it has a end point (3,5). If something's a midpoint what does it mean?

OpenStudy (anonymous):

it would be the middle

OpenStudy (anonymous):

and so the endpoints are what to the mid point?

OpenStudy (anonymous):

sorry im trying just exhausted lol .. and Ik this is going to be wrong but the starting and ending points?

OpenStudy (anonymous):

Don't worry about it :). If you are in the same time zone as me then you should probably go to sleep but yes they are the starting and ending points but more importantly they are the same distance apart, make sense?

OpenStudy (anonymous):

yes perfect sense

OpenStudy (anonymous):

alright cool so since we know that the distance between one endpoint is the same as the other we can just draw the point the same distance and in the opposite direction from the the midpoint, make sense?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

so how we can do this is by finding the change in x and y from the end point to the mid point and add that change to the mid point to get the other end point

OpenStudy (anonymous):

(3,5) (X,-11)?

OpenStudy (anonymous):

hmm I am kinda confused as to how you got that, so lets work on this together.

OpenStudy (anonymous):

if the end point is 3,5 and the midpoint is 5,-11 the change is what for x and what for y?

OpenStudy (anonymous):

:/ im so lost.. when I try to graph those they don't come anywhere close together so im not sure what im looking at or for

OpenStudy (anonymous):

haha it's fine here let me draw you a picture.

OpenStudy (anonymous):

|dw:1413272315556:dw| does this make sense?

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