Posted by **Vanessa** on Wednesday, August 14, 2013 at 1:20pm.

How would you do this?

Rs=8y

St=4y+8

RT=115y-9

a.Find the value of y

b. Find rs, st, rt

- Geometry -
**Steve**, Wednesday, August 14, 2013 at 1:26pm
RS+ST=RT

8y+4y+8 = 115y-9

103y = -17

y = -17/103

now plug that into the expressions for the segments

- Geometry -
**Vanessa**, Wednesday, August 14, 2013 at 1:30pm
How'd you get that? I was trying the problem and couldn't get it

- Geometry -
**Vanessa**, Wednesday, August 14, 2013 at 1:31pm
I'm sorry rt=15 not 115

- Geometry -
**Vanessa**, Wednesday, August 14, 2013 at 1:35pm
I got y=-17 Am I right?

- Geometry -
**Steve**, Wednesday, August 14, 2013 at 3:45pm
well, let's see:

8y+4y+8 = 15y-9

3y = 17

y = 17/3

right off, you should have realized that a negative value for y makes no sense, since we are dealing with line segments, which have positive lengths.

I'm still bothered by the fraction answer. A simple exercise like this usually has a nice integer result.

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