There are 15 qualified applicants for 5 trainee positions in a fast-food management program. how many different groups of trainees can be selected? select one:
a.75
b. 3003
c. none of these choices
d.360,360
e.15

C

Step-by-step explanation:

This is actually a combination problem as we are trying to select groups of 5 from the 15 qualified trainees.

To do this, we use the combinatorial approach. This is done by using the formula 15C3 = 15!/(15-3)!3!

This gives a value of 455

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

answer:

3 bags of apples and 2 bags of oranges.

step-by-step explanation: