7b / 12 = 4.2
multiply both sides by 12
7b = 50.4
divide both sides by 7 to isolate b
b = 7.2
It would be -26
Its very easy But you will get better =)
You are tackling a trigonometry question here. I recommend remembering the functions and drawing the triangle out.
Answer:
Step-by-step explanation:
11 t= -5 17 r = 27
12 n= -1 18 k = -20
13 m=-5
14 x= - 11
15 y = 70
16 f = - 70