PLEASE HELP ASAP I JUST WANNA PASS MY MATH CLASS

Answer:
59°
Step-by-step explanation:
The total sum of all the angles in a triangle is 180°.
We have the angle measures 31° and 90°.
That adds up to 121°.
To find the measure of angle k, subtract 121 from 180.
180 - 121 = 59°
k = 59°
check:
59 + 31 + 90 = 180°
:D
Have a nice day!
Answer:
b) 59
Step-by-step explanation:
All the angles should sum up to 180.
When you see a box that means it is a 90 degrees angle. So 90 + 31 = 121
So then subtract 121 from 180 to get 59
Hope this helped :)