Answer:
-4
Step-by-step explanation:
Move variables to one side and numbers on the other.
12 - 3x = -6x
+ 3x +3x
12 = -3x
/-3 /-3
-4 = x
The problem is modelled as right angle triangle, shown in the diagram below
The distance between the pilot and the house is labelled as

Using the trigonometry ratio of sine


the answer would be 0.800375 but when you round it to the nearest tenth it would be 0.8
Let two number A and B, and A >B
as we know A+10=2B① && A+B =38②
①-② solve that
B=16 so A=22
so, they are 16 and 22
10.3 = 0.6y...divide both sides by 0.6
10.3 / 0.6 = y
17.17 = y <=