SOLUTION: please help me with these questions I'm lost 1. if GM = 5, MJ = 3, and MF = 2, find MH. 2. if LJ = 6, JG = 8, and LI = 7, find IH. 3. if LJ = 3 and JG = 7, find LF. (the im

Algebra ->  Test -> SOLUTION: please help me with these questions I'm lost 1. if GM = 5, MJ = 3, and MF = 2, find MH. 2. if LJ = 6, JG = 8, and LI = 7, find IH. 3. if LJ = 3 and JG = 7, find LF. (the im      Log On


   



Question 1154645: please help me with these questions I'm lost
1. if GM = 5, MJ = 3, and MF = 2, find MH.
2. if LJ = 6, JG = 8, and LI = 7, find IH.
3. if LJ = 3 and JG = 7, find LF.
(the image of the shape is here)
https://photos.google.com/share/AF1QipNDsH-Y-5LCQudqf-ni7jxhbzAdoktuJNcu0JE0nHqluQggBo2jdolV45TQEwTtrw/photo/AF1QipOEDwwcns51zPR9xJdjzFIDEiftO21-uVGDL0Tb?key=WFFkTV82Y2I1VldRRnNfSU92MllTT0czaVA3N3hn

Found 2 solutions by mananth, MathLover1:
Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!

1. if GM = 5, MJ = 3, and MF = 2, find MH.
GM *MJ = MF * MH ( Property of intersecting chords)
MH = 7.5
2. if LJ = 6, JG = 8, and LI = 7, find IH.
LJ * LG = LI * LH (Intersecting Secants Theorem)
6*14= 7*LH
LH =12
HI = 5

3. if LJ = 3 and JG = 7, find LF.
LJ*LG =LF^2 ( Tangent Secant theorem)
30= lF^2
LF = sqrt(30)

Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

1. if GM+=+5, MJ+=+3, and MF+=+2, find MH.
When two chords intersect each other inside a circle, the products of their segments are equal.
GM+%2AMJ=MH%2AMF
5%2A3=MH%2A2
15=MH%2A2
MH=15%2F2
MH=7.5

2. if LJ+=+6, JG+=+8, and LI+=+7, find IH.
If you have a point L outside a circle and draw two secant lines (LJG, LIH) from it, there is a relationship between the line segments formed. Refer to the figure given. If you multiply the length of LJ+by+the+length+of+%7B%7B%7BLG, you will get the same result as when you do the same thing to the other secant line.

LJ%2ALG+=+LI%2ALH........since LG=LJ%2BJG+=+6%2B8=14, and LH=+LI%2BIH=7%2BIH
we have
6%2A14+=+7%2A%287%2BIH%29
7%2BIH=%286%2A14%29%2F7.....simplify
7%2BIH=6%2A2
IH=12-7
IH=5

3. if LJ+=+3 and JG+=+7, find+LF.
here LF is a tangent, so
LF%5E2=LJ%2AJG
LF%5E2=3%2A7
LF%5E2=21
LF=sqrt%2821%29-> exact solution
LF=4.6-> approximately