Answer:
x=9
Step-by-step explanation:
Similar triangles
8/20 = 6/(x+6)
==> 2/5 = 6/(x+6)
2/5x+12/5=6
2/5x=18/5
x=9
if you make a graph and add the coordinates on the graph you can use that find out how it creates a ratio of 1:2
Answer:

Step-by-step explanation:
Just the slope, so we can simply apply the definition, as variation in y over the variation in x

Use order of operations from left to right
• and / first
+ and - second
[6•2/(-14)]. +(9•2)=
(12/-14)+18=
(-6/7)+ 18•7/7=
(-6+126)/7=
120/7