A classroom has 12 juniors and 23 seniors. There are no other students in the class. What percentage of the students are seniors?

66%

Step-by-step explanation:

To find the percentage, we can use this formula:

Part/Whole

In this case, the Part=Seniors and Whole=All of the students in the class

Part/Whole

23/(23+12)

=23/35

=0.65714

=0.66

=66%

28 degrees. This is because the first angle is 12 degrees, the third is x degrees and the second is 5x. You know that in a triangle the angles add up to 180 degrees so 12 + 5x + x = 180. Then you get 6x =168 and x =28 degrees. (**x being the thrid angle**)