Answer:
20i+4i =16i-19
Step-by-step explanation:
Answer:
38.7
Step-by-step explanation:
the sum of supplementary angles equals 180°
you can have an acute angle (less than 90°) + an obtuse angle (greater than 90°) equal to 180°
But you can also have a right angle (equal to 90°) + another right angle equal to 180°
Answer: (b) sometimes