Answer:
The assignment of teachers to students enrolled in each of their classes is NOT an example of a function.
Step-by-step explanation:
To determinate if the given example is a function, you have to use the definition of function and compare it to the example.
A function is defined as a relation that assigns each element of one set to exactly one element of the second set. The first set is called the domain and the second set is called the range.
In this case, the domain is represented by the teachers and the range is the students enrolled in each teacher's classes.
Therefore, the example is not a function because each teacher is not assigned to exactly one student. In other words, in general, one teacher has more than just one student.
Answer:
2
Step-by-step explanation:
20-10=10
25-5=20
20÷10=2
Answer:
XY = 16
Step-by-step explanation:
The ratio is 3 to 2 meaning that the sides of the triangle ABC and triangle AYY are in a ratio of 3 to 2. You are comparing the big triangle to the small triangle and the sides are compared the same way.
3:2 = 24:XY
3/2 = 24/XY
3 XY = 48
XY = 48/3
XY = 16
Answer:
C
Step-by-step explanation:
to find the first 4 terms, substitute n = 1, 2, 3, 4 into the expression
n = 1 → 1(1 - 1) - 4 = 0 - 4 = - 4
n = 2 → 2(2 - 1) - 4 = 2 - 4 = - 2
n = 3 → 3(3 - 1) - 4 = 6 - 4 = 2
n = 4 → 4(4 - 1) - 4 = 12 - 4 = 8
the first four terms are - 4, - 2, 2, 8 → C