Systems and Matrices Quiz

Files have the pics. Matrices quiz…………………. 5 small questions thank you!!! systems and matrices quiz

Give the solution to the system as an ordered pair, (2, y).
(y = 40 – 10
y
3x + 11
Give the solution to the following system of equations:
3.9y – 7.82 = – 3.9
2.5y + 5z = 27.5
Round your answer to 2 decimal places. (answer in the form (x,y))
Todd just inherited $46500. He chooses to invest some of his inheritance in a mutual fund that pays 8% and the rest in a less risky CD that pays 3%. If his annual interest between the two accounts is $2265, how
much did he invest in each account?
Amount invested in mutual fund paying 8% interest = $
Amount invested in CD paying 3% interest – S
A man invests his savings in two accounts, one paying 6% and the other paying 8% simple interest per year. He puts twice as much in the lower-yielding account because it is less risky. His annual interest is $8260.
How much did he invest at each rate?
Amount invested in account paying 6% interest = $
Amount invested in account paying 8% interest = $
For the following system, determine whether there is one solution (consistent
independent), infinitely many solutions (consistent dependent), or no solution.
2- y – 4z = 3
-32 + 3y + 12z = 75
– 2 + y + 4z = -3
One solution
Infinite solutions
No solution