First take the -10 and add it to 30 (10+30=40) then you have 5x=40. Then you want to isolate the x. So take 5 divided by both sides 40/5=8. I thin the answer should be 8. Where you trying to get the slope or find x?
Answer:
The measure of the perpendicular KD is 8.72 unit .
Step-by-step explanation:
Given as :
The triangle AKM , with KD perpendicular to AM
The measure of side AK = 6 unit
The measure of side KM = 10 unit
The ∠ AKM = 93°
Let The measure of side KD = x unit
Now,
∵ KD ⊥ AM , KD divide the angle ∠ AKM equally
So, ∠ AKD = ∠ 
I.e ∠ AKD = ∠ 
∴ ∠ AKD = 46.5°
Now, Again
Cos Ф = 
I.e Cos 46.5° = 
I.e 0.688 = 
∴ KD = 
I.e KD = 8.72 unit
Hence The measure of the perpendicular KD is 8.72 unit Answer
Answer:
The lines are perpendicular.