Chapter 12 Review

Add

• 11    8
  -4     2
• 3     2
  -6    -6
• -3    2
  -4    -6
• 10    8
  -6    2

Find B-A

• -3     1
  7     -1
• 1     0
  1     -4
• 4       0
  -6     1
• not possible because rows do not match columns

Multiply

• 20     15    -10
  30     -5         0
• -20      15     -10
  30     -5          0
• 1        8       3
  11     4        5
• 20     -15     10
  -30         5        0  

Find the values of x, y and z.

• w = 13, x = 4, y = 7, z = 23
• w = 13, x = -4, y = 11, z = 23
• w = 13, x = 4, y = 11, z = 23
• w = 13, x = 4, y = 11, z = 17

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

Elliot says almost everyone arrived at the party after 10:00 P.M., but Nancy thinks most people came earlier. When did a majority of the people arrive? 

• 7:00-7:59 P.M.
• 8:00–8:59 P.M.
• 9:00–9:59 P.M.
• 10:00–10:59 P.M. 

How many cities have temperatures between 70 degrees and 99 degrees?

• 44
• 34
• 26
• 62

How many of the students had an ACT composite score of at least 20? 

• 12
• 15
• 20
• 9

Which interval has 4 students?

• 56-59
• 60-63
• 60-67
• 48-51

What is the median of the data?

• 120
• 100
• 90
• 140

What is the IQR of the Cruisers?

• 4
• 6
• 13
• 10