On all of them sorry but if i dont know wich one to do then....
Answer:
105
Step-by-step explanation:
The interior angle for R is supplementary to the 155 degree angle
(they add to 180)
180-155=25
The sum of the interior angles of a triangle is always 180
180-50-25= 105
Answer:
Quadratic trinomial
Step-by-step explanation:
It is a trinomial because it has 3 terms.
Quadratic means the highest exponent is 2.
