Answer:
x = 48°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°, thus
x = 180° - (90 + 42)° = 180° - 132° = 48°
Answer:

Step-by-step explanation:
We must develop three equations in three unknowns.
I will use these three:



Answer:
mb = 30
Step-by-step explanation:
i got it from me school
Answer:
20 I think
Step-by-step explanation:
I mean I would say it is 20