Name:______________________
Math 199
Chapter 5 review/quiz
1VA
Direction:
Work problems out completely.
No work no credit.
Write neatly so I can read it.
Make sure
you go in one direction(leftright or updown).
Circle final answers.
Each is worth
1
points.
If you use
a calculator, write down what the screen looks like. (i.e. all the steps you use in the calculator to get the
answer, including the augmented matrix)
Questions 110:
The total output of loudspeaker systems of the Acrosonic Company in their three production
facilities for May and June is given by the matrices
A
and
B
, respectively.
The unit production costs and selling
prices for these loudspeakers are given by matrices
C
and
D
, respectively.
Find the following:
1.
What are the dimensions of each matrix?
A.________
B.________
C.________
D.________
2.
Find a
12
, b
32
, c
23
, d
41
.
a
12
_______
b
32
_______
c
23
_______
d
41
______
3.
What is the total output of the company for May and June?
4.
What is the difference between June and May?
5.
The management of Acrosonic has decided to increase its July production of loudspeaker systems by 20% (over
June output).
Find a matrix giving the targeted production for July.
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 Spring '08
 STAFF
 Math, Kelly Fisher, lowrisk stocks, private investment club, Acrosonic Company

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