AD, BD, and CD are angle bisectors of the vertex angles of △ABC. CF=8 meters and CD=17 meters. What is DE?

hm let me think hm think think hm think yes

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75

umm you say your want to . but you do know that this is the mathematics.  

o~o