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adell [148]
3 years ago
7

What is the length of xy?

Mathematics
2 answers:
Sav [38]3 years ago
8 0

Given:

XR=x+8

RY=4x-10

Since R is the midpoint of the line, we can set XR equal to RY and solve for x.

RY=XR

4x-10=x+8

4x=x+18

3x=18

x=6

Now we know what x is. We can plug in x to RY and XR and then add it all together to find XY. Let's find XR:

XR=6+8

XR=14

Let's find RY now:

RY=4(6)-10

RY=24-10

RY=14

Since we know that:

XR+RY=XY

We can plug in our answers:

14+14=XY

Final answer:

XY=28

8090 [49]3 years ago
7 0
The length should be A but I'm not positive
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Read 2 more answers
Plz help i dont understand
Elina [12.6K]
You can search in google if you want for the "inscribed quadrilateral conjecture"

and if you want... I can give you a quick proof of it

hmmm in short, if you inscribe a quadrilateral polygon in a circle
it will have 4 angles

each pair of opposite angles, are "supplementary angles", or they add up to 180°

so.. that said in yours, R+P = 180 and Q+O = 180 as well

you only need Q

so  \bf \measuredangle Q+\measuredangle O=180\qquad 
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solve for "x"

how big is Q? well, 2x + 4 :)
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