Systems and matrices

Solve the system of equations:

• ( -2, 4, 3)

• ( 2, 1, 6)

• No solution

• None of these

• Infinitely many solutions

Solve the system of equations:

• ( -2, 3, -3)

• One Solution, none of these

• ( -2, -3, 3)

• ( -3, 3, -2)

• No Solution

The school that Laura goes to is selling tickets to the annual talent show. On the first day of ticket sales the school sold 4 senior citizen tickets, 2 adult tickets and 5 child tickets for a total of $55. The school took in $67 on the second day by selling 7 senior citizen tickets, 2 adult tickets and 5 child tickets. On the third day the show earned $46 when they sold 2 senior citizen tickets, 4 adult tickets and 2 child tickets. What is the price each of one senior citizen ticket, one adult ticket and one child ticket?

• Adult: $12

  Child: $8

  Senior: $8

• Adult: $6

  Child: $4

  Senior: $5

• Adult: $7

  Child: $5

  Senior: $4

• None of the above.

Solve the system of equations:

• ( 5, 1, -4)

• (-5, 3, -1)

• One solution, none of these

• ( -1, 5, -4)

• No solution

Solve the system of equations:

x + y + z = 4

x = -2y

z = -3y

• (2, -1, 3)

• (2, 3, 1)

• One solution, none of these

• (4, 1, -1)

• No solution

3) Solve the system of linear equations.

• (3, 1, -5)

• (-3, 1, -1)

• no solution

• infinitely many solutions

Sam has a total of 17 bikes, unicycles, and skateboards. A bike has 2 wheels, a skateboard has 4 wheels, a unicycle has one wheel and she has a total of 42 wheels. There are just as many bikes as unicycles and skateboards together. Which system models this scenario?

• B + U + S = 42

  2B + U + 4S = 17

  B = U + S

• B + U + S = 17

  2B + U + 4S = 42

  B = U + S

• B + U + S = 17

  2B + U + 4S = 42

  B = U*S

The augmented matrix shown in row-echelon form indicates a system with

• one solution

• no solution

• infinitely many solutions

Tags

CCSS.8.EE.C.8B

The augmented matrix shown in row-echelon form indicates a system with

• one solution

• no solution

• infinitely many solutions

Tags

CCSS.8.EE.C.8B

How many rows are in a 5 X 3 matrix?

• 15

• 5

• 3

• 8

• X