A. This expression has 4 terms
B. The constants are -5, 3, 72 and 10
C. The third term is 72
D. The coefficient is y
Answer:
i think E TO E
Step-by-step explanation:
Let's begin by listing out the information given to us:
There are four students: n = 4
Number of students to be selected: r = 2
To calculate the combination of 2 students to be chosen, we use:

Therefore, there 12 possible combinations from these
Answer:
C is the answer.
Step-by-step explanation:
That would be a variable, x being one of the most commonly used variables to represent unknown numbers.