Answer to Question #117800 in Algebra for mike

Question

A suburban newsagent is asked to collect data about the number of four popular daily newspapers
that he sells in his shop on weekdays.
The number of each paper sold and the daily taking are recorded for Monday to Thursday of the first
week:
Newspaper Takings
($) A B C D
Weekday Mon 123 108 48 12 348.00
Tue 136 b 43 15 377.60
Wed 115 133 36 11 345.30
Thur 145 128 45 18 405.50

Unfortunately, the number of newspaper B sold on Tuesday, b, was lost.

(a) (i) Write the number of each paper sold for the four days as a 4 × 4 matrix, P.

(ii) Write the takings for the four days as a column matrix, Q.


(b) If newspaper A costs $1.20, newspaper B costs $1.00, newspaper C costs $1.30 and newspaper D
Costs $2.50 write a suitable matrix X, representing the cost of each of the newspapers.

(c) Using matrix equation PX=Q to find the missing figure b; the number of newspaper B sold on
Tuesday. Show all working.

Answer 1

Dear mike, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order