Ms. madison directs two choruses. one chorus has 28 students. the other chorus has 36 students. for rehearsals, she wants to divide each chorus into the largest possible equal groups with no students will be in each groupe

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

idk

step-by-step explanation: i just don't

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,