Need answer to these questions.

Use the matrices below to perform matrix multiplication. 45 11 47 5 BZiiooni'D: 8 5 1 710 If the operation is undened, enter NA. Hint: To create a matrix in Mobius, click on the icon 3333: that has three rows of three dots - it's next to the innity symbol. Specify the appropriate number of rows (horizontal) and columns (vertical). Use a system of linear equations with two variables and two equations to solve. 170 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed. Solve the system of equations by any method. 3;I: + 243; : 9 381123 Enter the exact answer as an ordered pair, (3,19). If there is no solution, enter NS. If there is an innite number of solutions, enter the general solution as an ordered pair in terms of :12. Include a multiplication sign between symbols. For example, a * 3