| Matrices | Weighted Averages | Venn Diagram Probablity | Statistics | Arithmetic Sequences |
|---|---|---|---|---|
|
1) 10 9 2) -12 52 3) -4 4) -5 17 5) N/A 6) 4 6
-7 3 39 -4 -7 -1 -2 26 -28 -12 29
Use the following matrices to perform the indicated operations:
A= [4 4] B= [6 5] C= [ -2 ] D= [2 -1 0] E= [-2 7] [2 -3] [-9 8] [ 1 ] [1 1 -2] [1 -3] [5 -2 -4] [0 3] 1) A+B 2) A*B 3) A*C 4) D*E 5)E*A 6)4A-2B |
8750
A new car salesperson sold an average of $28,000 per day for the first five days she worked. The next 3 days she worked, she sold an average of 42,000. How much did she sell on average per day over the entire 8 days?
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9 senior boys
The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 How many senior boys play football and wrestle? |
They both have an arithmetic mean of 90.
They both have an arithmetic mean of 90.
A math teacher must make a recommendation for a $2000 scholarship. The teacher has two students in mind, Alan and Brianna. The teacher decides to let their grades be the determining factor. Here are their grades for the semester: Alan: 90, 90, 80, 100, 99, 81, 98, 82 Brianna: 90, 90, 91, 89, 91, 89, 90, 90 Which student has the higher arithmetic mean average? |
Cd= -3
35, 32, 29, 26
|
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Florida State: 101 11 1
Nebraska: 103 24 0 Marshall:112 24 0 Florida: 97 18 1 Tennessee: 93 18 2
COLLEGE FOOTBALL: The Division I-A college football teams with the five best records during the 1990s are listed below:
Overall Record Bowl Record Win Lose Ties W L T Florida State 109 13 1 Florida State 8 2 0 Nebraska 108 16 1 Nebraska 5 5 0 Marshall 114 25 0 Marshall 2 1 0 Florida 102 22 1 Florida 5 4 0 Tennessee 99 22 2 Tennessee 6 4 0 Use subtraction of matrices to determine the regular season records of these team during the decade. |
128,000
A bag of rice weighs 4 pounds. One ounce of rice contains about 2000 grains of rice. About how many grains of rice are in the bag? (1 pound = 16 ounces)
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18 senior boys
The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 How many senior boys play football but do not wrestle? |
They both have a median of 90.
The teacher decides to let their grades be the determining factor. Here are their grades for the semester:
Alan: 90, 90, 80, 100, 99, 81, 98, 82 Brianna: 90, 90, 91, 89, 91, 89, 90, 90 Which student has the higher median? |
Cd= -20
-3, -23, -43, -63
|
|
3T= -12 6
0 3 9 -18
If T= -4 2 find 3T.
0 1 3 -6 |
A) 75.8 B) 72.1
C) 78.4 D) 81.2
Stan's Test Average is 72 and his quiz average is 80. If his classwork average is 86, then what will his grade in the class be if he gets a 70 on the final exam? Assignment percentage is as follows:
Tests - 30% Quizzes - 20% Classwork - 20% Final Exam - 30% |
143 senior boys
The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 How many senior boys are there in total? |
20
The teacher decides to let their grades be the determining factor. Here are their grades for the semester:
Alan: 90, 90, 80, 100, 99, 81, 98, 82 Brianna: 90, 90, 91, 89, 91, 89, 90, 90 What is the range of Alan's grades? |
Cd= -16
4, -30, -40, -30, -60
|
|
A) [-1 8 3] + [4 -4 2] B) [7 -1 2] + [-4 -3 3]
-4 0 5 2 -1 -2 3 4 -5 -3 -5 -3 C) [1 -3 5] + [2 7 0] D) [5 9 -2] + [-2 -5 -3] 7 -2 0 -13 1 8 3 7 5 3 -8 3
Which of the following is equal to [3 4 5]?
-6 -1 8 |
A weighted average is an average resulting from the multiplication of each component by a factor reflecting its importance.
Define weighted average? Give one real time example.
|
30 senior boys
The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 How many senior boys either wrestle or play football? |
2
The teacher decides to let their grades be the determining factor. Here are their grades for the semester:
Alan: 90, 90, 80, 100, 99, 81, 98, 82 Brianna: 90, 90, 91, 89, 91, 89, 90, 90 What is the range of Brianna's grades? |
Cd= -2
-7, -9, -11, -13
|
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Matrices can be uses in the real world for:
Morality Rate Etc
What are some examples of matrices in the real world?
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Weighted Average can be used for:
Calculation of GPA Calculation of Credit Score Scoring Tests with different points on each question Etc
What are the real time applications where you use the concept of weighted averages?
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The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 Answer the following: 1. What is the probability of senior boys playing only football? 2. What is the probability of senior boys playing both playing both wrestling and football? 3. What is the probability of a senior boy not playing any of the game? 1) 18/143 2) 9/143 3)104/143
The Venn Diagram below shows the number of senior boys who play football or wrestle:
Football Both Wrestling Other 18 9 12 104 Answer the following: 1. What is the probability of senior boys playing only football? 2. What is the probability of senior boys playing both playing both wrestling and football? 3. What is the probability of a senior boy not playing any of the game? |
Both Alan and Brianna have similar results, and it caused them to have a tie.
The teacher decides to let their grades be the determining factor. Here are their grades for the semester:
Alan: 90, 90, 80, 100, 99, 81, 98, 82 Brianna: 90, 90, 91, 89, 91, 89, 90, 90 What might be the problem with using these measures of central tendency? |
Cd= 3
9, 14, 19, 24
|
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