9. ABC and DEF are similar triangles. Find the measure of BC.
Please help!

Check the picture below.

let's change the decimal amounts to fractions, so for 3.5 let's use 7/2 and for 1.5 let's use 3/2, let's use the proportion on the left side and then the next one after

now, let's notice that we didn't use the 2x+11, since that gives us a negative "x" and "x" cannot be a negative value.

answer: f = 32.2m

step-by-step explanation: that is the answer

step-by-step explanation:

where is the questions