Jeriel recorded the grade-level and instrument of everyone in the middle school School of Rock below.

Based on these results, express the probability that a seventh grader chosen at
random will play the drums as a fraction in simplest form

9/43

Step-by-step explanation:

Add up the amount of people playing instruments total and put that number under the amount of people playing drums. ez pz

28

step-by-step explanation:

8+8+6+6

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".