Matrices Review Oct 3

Solve the system of equations: Using Inverse Matrices

• ( -2, 3, -3)
• None of these
• ( -2, -3, 3)
• ( -3, 3, -2)

Tags

CCSS.HSA.REI.C.9

Find the inverse.

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.9

• 5050 people attended the event.

• Adult tickets cost $4 each.

• Ticket sales totaled $2200.

• Four adults purchased tickets.

Tags

CCSS.8.EE.C.8C

• 
• 
• 
• 

Tags

CCSS.HSA.REI.C.8

Amy sold 10 packages of sugar cookies and 2 packages of oatmeal cookies for $56. Adam sold 9 packages of sugar cookies and 3 packages of oatmeal cookies for $60. What is the price of 1 pack of sugar cookies and 1 pack of oatmeal cookies?

• Sugar Cookies $5 
  Oatmeal Cookies $3
• Sugar Cookies $4
  Oatmeal Cookies $8
• Sugar Cookies $2
  Oatmeal Cookies $6
• Sugar Cookies $3
  Oatmeal Cookies $6

Tags

CCSS.8.EE.C.8C

Calculate the determinant

• 0
• -15
• -70
• 10

What is A^-1?

• 
• 
• 
• 

Tags

CCSS.HSA.REI.C.9

Find A+B

• 8     10
  8      1 
• 12     25
  7     1
• 10     30
  0     1
• can't add two together because the rows dont match columns