C
Because the letters a and b are variables
Answer:
i believe rhe awnser is 11/12
Answer:
Step-by-step explanation:
Answer:
I think the answer is D because you cant find the other measures unless you have at least one angle measure but you don't so you cant determine the answer.
Step-by-step explanation:
306 is the total cards sent by all the students in the class. Lets say x is the number of students in class, therefore each student needs to send x-1 cards (since they do not send themselves a card). So depending on your level of math, you could either take the complex way to solve it using quadratic equations, or just find the number that if multiplied by itself then subtracted, gives you 306.

===============
Complex way

So a = 1, b = -1, c=-306
using the quadratic equation:
