Atest is worth 100 points. the test is made up of 40 items. each item is worth either 2 points or 3 points. which matrix equation and solution represent the situation?

c on edg.

Step-by-step explanation:

Total number of points in the test = 100

Total number of items in the test = 40

Let number of items of 2 points be x and number of items of 3 points be y.

Now, using the given information the situation can be represented by using the following equations :

⇒ x + y = 40 .........(1)

⇒ 2x + 3y = 100 .........(2)

The matrix equation is :

By solving the equation (1) and equation (2), we get :

Solution : x = 20 and y = 20

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

according to egenuity the answer is

step-by-step explanation:

d. 344.22