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Raggs Limited, a clothing firm, determines that the revenue, in rand, of selling x dresses is given by the
function
R(x) = x(450 − 0,050x).
It also determines that the total cost, in rand, of producing x dresses is given by the function
C(x) = 40 000 + 0,025x2.
The marginal profit when x dresses are produced and sold, is given by the function
A restaurant owner is concerned about the amount of time customers must wait before being served over
weekends. He collects data on the waiting times, to the nearest minute, of 20 tables on Friday evening and
15 tables on Saturday evening.
The average waiting time on Friday evening is 24 minutes per table.
The total waiting time for the 15 tables on Saturday evening is seven hours and three
quarters of an hour.
The mean waiting time per table for Friday and Saturday evening, rounded to the nearest minute, is
The ages (in years) of 50 individuals on a mailing list, in ascending order are:
10 11 13 14 14 15 15 17 18 20
20 21 22 24 26 26 26 27 29 30
31 31 33 34 36 36 36 37 38 39
40 41 41 43 44 45 45 46 47 48
49 51 53 55 57 58 59 59 60 60
Consider the frequency table for the data:
A B C D
Interval Frequency Frequency Frequency Frequency
0,5 – 15,5 5 7 7 5
15,5 – 30,5 14 13 12 15
30,5 – 45,5 16 17 18 14
45,5 – 60,5 15 13 13 16
The column that represents the correct frequencies for the data is
[1] A
[2] B
[3] C
[4] D
find the general solutions of (x+y+2z) dz/dx+(x+y+2z)dz/dy=3z
Calculate the concentration in mol/dm3 and g dm3 of a Sodium ethanediote (Na2C2O4) Solution 5.00cm3 of which were oxidized in acid Solution by 24.50cm3 of potassium manganate (vii) solution containing 0.05mol/dm3
Carter and Goddard(2016:46) acknowledge that although the book " how to analyse text" focus on verbal language,this language works in conjunction with other signs to make meaning.bearing this statement in mind,read the following pictures and answers the questions that follow.
1) which elements would you say is the linguistic sign
2) which elements would you consider to be a non- linguistic sign
3) put together ( the linguistic sign and non linguistic sign), what meaning is being conveyed by the two elements?
A quality-control exercise was carried out by ChocCheer for estimating the percentage of defective chocolate
bars in a large shipment of 1 000 boxes with 100 bars in each box. Twenty boxes were chosen at random,
and every bar in them checked. The number of defective bars in each of the boxes are:
8, 10, 4, 3, 11, 6, 9, 10, 2, 7, 6, 12, 9, 11, 6, 3, 14, 9, 5, 4
Choose the CORRECT statement.
[1] The variable is the 1 000 boxes of chocolate bars.
[2] The sample unit 149.
[3] The sample is the 20 boxes of chocolate bars that were selected.
[4] The population is the 100 chocolate bars per box
To save money for a new house, you want to begin contributing money to a savings account. Your plan
is to make equal contributions to the account for eight years. Each contribution will be R18 490,00. The
contributions will come at the end of every three month period, starting three months from now. The savings
account pays 9% interest per annum, compounded quarterly. How much money do you expect to have in
the account at the end of the eight years
Arrange the following according to increasing boling point:
1m NaCl, 1m CaCl2, 1m C6H12O6, 1m AlCl3
Explain your answer.
Define Botswana democracy
