Precalculus: Matrices and Row Operations- Pre Test Exam Questions And Answers 100% Guaranteed Pass.

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Precalculus: Matrices and Row Operations-
Pre Test Exam Questions And Answers
100% Guaranteed Pass.


A student wrote the matrix below to represent the solution to a system of equations.


[1 0 5 -2
0030
0 0 0 -1] - Answer✔A. no solution

Which of the following is the result of the operation below? - Answer✔A. [1 2 3 6
1 1 1 -2
0 2 1 5]
The matrix below represents a system of equations


[2 -1 -3 -20
-2 -6 6 -4
0 3 -2 -9]
Which matrix represents 1/2R2+R3 -> R3? - Answer✔A. too much to type but its the first one
lol
A store sells yogurt in small, medium, and large sizes. A small yogurt costs $2, a medium costs
$3, and a large costs $5. In one hour, the shop sold 27 yogurts for $98. There were five more
large yogurts than small yogurts. The matrix below represents the system of equations in this
situation. How many of each size yogurt did the store sell during that hour? - Answer✔A. 7
small yogurts, 8 medium yogurts, 12 large yogurts
The drama club at a local high school sells adult, teen, and child tickets for a school play. The
matrix below represents the tickets sold and the total cost of the tickets for three performances.

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