Points B, D, and Fare midpoints of the sides of angle ACE. EC = 39 and DF = 18. Find AC

9
78
39
36

Line AC = 36

Step-by-step explanation: The first and most important clue is the fact that points B, D and F are midpoints of the triangle ACE. What this tells us is that point B divides line AC into two equal sides. Likewise points D and F. If point D divides line EC into two equal sides, then line ED equals

39/2 = 19.5

Also, triangle FED is similar to triangle AEC. Since ED is half of EC, and FE is half of AE. Therefore in triangles FED and AEC,

FD/ED = AC/EC

18/19.5 = AC/39

By cross multiplication we now have

(18 x 39)/19.5 = AC

702/19.5 = AC

36 = AC

Therefore line AC = 36

- 1.613 = -1.6 or -1.61

-1.522 = -1.5 or -1.52

0.587 = 0.6 or 0.59

3.079 = 3.1 or 3.08

x+y = 29, 5x + 2y = 100

step-by-step explanation:

i'm guessing it was a multiple first option was the correct answer