Answer:
37 degrees
Step-by-step explanation:
The angles within a triangle always add up to 180 degrees. Right angles are always 90 degrees. 53 + 90 = 143 degrees. 180 - 143 = 37 degrees
The answer to this question is b)
For the given equation, either 3x + 7 = 0 or x + 7 = 0
Now,
or
So, possible values of x is : -7 and -7/3