Matrix Equations - Word Problems

Solve the system.  Write the matrix equation on your own paper.
-5x + 5y = -10
-7x + 4y = 13

• (-7, -5)
• (-7, -9)
• (7, -9)
• (-7, 5)

Tags

CCSS.HSA.REI.C.9

Solve the system.  Write the matrix equation on your own paper.
-5x + 5y = -10
-7x + 4y = 13

• (-7, -5)
• (-7, -9)
• (7, -9)
• (-7, 5)

Tags

CCSS.HSA.REI.C.9

Solve the system using matrices
x + 2y = 2
5x - 6y = - 54

• (-6, 4)
• (-8, 4)
• (8, 4)
• (6, 4)

Tags

CCSS.HSA.REI.C.9

Solve the system using matrices
3x - 8x = 32
x + y = 7

• (-8, 1)
• (8, -1)
• (-1,8)
• (1, -8)

Tags

CCSS.HSA.REI.C.9

Solve the system using matrices
x + 7y = - 21
9x + 7y = 35

• (7, -4)
• (-4, 7)
• (7, 4)
• (-4, -7)

Tags

CCSS.HSA.REI.C.9

Solve the system of equations: 

• ( 4, 0, -2)
• ( -4, -2, 0)
• None of these
• ( -4, 0, -2)

Tags

CCSS.HSA.REI.C.6

Homer sells tickets for admission to your school play and collects a total of $104. Admission prices are $6 for adults and $4 for children. He sold 21 tickets total. How many of each type of ticket were sold?

• 10 adults, 11 children
• 12 adults , 9 children
• 11 adults, 10 children
• 9 adults, 12 children

Tags

CCSS.7.EE.B.3

David is running a concession stand at a soccer game. He sells nachos and sodas. Nachos cost $1.50 each and sodas cost $0.50 each. At the end of the game, David made a total of $78.50 and sold a total of 87 nachos and sodas combined. 

• 35 nachos, 52 sodas
• 18 nachos, 69 sodas
• 52 nachos, 35 sodas
• 61 nachos, 26 sodas

Tags

CCSS.6.NS.B.3

Dennis mowed his next door neighbor’s lawn for a handful of dimes and nickels, 80 coins in all.  Upon completing the job he counted out the coins and it came to $6.60.  How many nickels and dimes did Dennis earn? 

• 40 nickels, 40 dimes
• 52 nickels, 28 dimes
• 28 nickels, 52 dimes
• 30 nickels, 50 dimes

Tags

CCSS.7.EE.B.3

A cashier has 25 coins consisting of nickels, dimes, and quarters with a value of $4.90. If the number of dimes is 1 less than twice the number of nickels, how many of each type of coin does she have?

• nickels is 20

  dimes is 3

  quarters is 2

• nickels is 3

  dimes is 5

  quarters is 17

• nickels is 13

  dimes is 10

  quarters is 2

• nickels is 12

  dimes is 10

  quarters is 3

Tags

CCSS.7.EE.B.3