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Briefly explain the following types of matrices.
i) Vector matrix.
ii) Null matrix.
iii) Diagonal Matrix.
(Solved)
Briefly explain the following types of matrices.
i) Vector matrix.
ii) Null matrix.
iii) Diagonal Matrix.
Date posted:
May 19, 2021
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Answers (1)
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Wakulima cereals board operates warehouses in three different locations Nairobi, Nakuru and Eldoret. The cereals stocked by Wakulima cereals board comprise maize, rice, wheat and...
(Solved)
Wakulima cereals board operates warehouses in three different locations Nairobi, Nakuru and Eldoret. The cereals stocked by Wakulima cereals board comprise maize, rice, wheat and beans. The table below shows the inventories of the cereals in the three warehouse locations as at 31 December 2009.
Required.
Using matrix algebra, determine the total estimated value of all the cereals stocked by Wakulima Cereals Board in the three warehouse locations as at 31st December 2009.
Date posted:
May 19, 2021
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Answers (1)
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Jawabu limited manufactures three products namely A, B & C. The company has three outlets X, Y & Z. The data below show the number...
(Solved)
Jawabu limited manufactures three products namely A, B & C. The company has three outlets X, Y & Z. The data below show the number of units of products A, B & C sold in outlets X, Y and Z for the months of September 2010 and October 2010.
Date posted:
May 19, 2021
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Answers (1)
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A green grocer has a stock of fruits comprising 900 boxes of oranges, 700 boxes of grapes and 400 boxes of pears.
The table below...
(Solved)
A green grocer has a stock of fruits comprising 900 boxes of oranges, 700 boxes of grapes and 400 boxes of pears.
The table below shows the market prices per box of the different types of fruits in four towns namely: Nairobi, Nakuru, Kisumu, Mombasa.
Required.
Using matrix algebra, advice the green grocer on the town in which the stock of fruits should be sold in order to realize the maximum gross sales revenue.
Date posted:
May 19, 2021
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Answers (1)
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A florist sells flowers in dozens and each dozen consists of two varieties: namely white roses and red roses.White Roses costs Sh. 75 each whereas...
(Solved)
A florist sells flowers in dozens and each dozen consists of two varieties: namely white roses and red roses.White Roses costs Sh. 75 each whereas Red Roses costs Sh. 150 each The selling prices of white roses and red roses are Sh 105 each and Sh 175 each respectively.
Required.
Given that the daily total cost per dozen of the roses is Sh 1,200 and assuming that all roses bought in a day are sold, use matrix algebra to determine:
i) The number of white roses and red roses that should be packed in each dozen.
ii) The daily profit earned from each dozen of flowers.
Date posted:
May 19, 2021
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Answers (1)
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Citing an example in each case, differentiate between a 'Vector matrix' and an 'Identity matrix'.
(Solved)
Citing an example in each case, differentiate between a 'Vector matrix' and an 'Identity matrix'.
Date posted:
May 19, 2021
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Answers (1)
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Outline four steps that are followed in determining the inverse of a 2 by 2 matrix.
(Solved)
Outline four steps that are followed in determining the inverse of a 2 by 2 matrix.
Date posted:
May 19, 2021
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Answers (1)
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Swere manufacturing ltd. produces two types of oil products: A & B. The following information relates to the two products.
(Solved)
Swere manufacturing ltd. produces two types of oil products: A & B. The following information relates to the two products.
Date posted:
May 19, 2021
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Answers (1)
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Giving an illustration in each case, differentiate between a 'square matrix' and a 'Unit matrix'
(Solved)
Giving an illustration in each case, differentiate between a 'square matrix' and a 'Unit matrix'
Date posted:
May 19, 2021
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Answers (1)
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Supernova ltd. deals in the manufacture of a product named 'Super'. The cost accountant of the company has estimated the following costs for the first...
(Solved)
Supernova ltd. deals in the manufacture of a product named 'Super'. The cost accountant of the company has estimated the following costs for the first quarter of the year 2010.
Date posted:
May 19, 2021
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Answers (1)
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A company produces 3 products X,Y & Z, which are processed through three departments namely P, Q & R. The table below shows the labour...
(Solved)
A company produces 3 products X,Y & Z, which are processed through three departments namely P, Q & R. The table below shows the labour hours required to produce one unit of each product in each of the departments.
Required
Using the Gaussian elimination method determine the optimal combination of the products that could be produced each month.
Date posted:
May 19, 2021
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Answers (1)
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XYZ limited intends to invest in a particular project whose maximum duration is 9 months. The estimated total profit of the project is given by...
(Solved)
XYZ limited intends to invest in a particular project whose maximum duration is 9 months. The estimated total profit of the project is given by the function.
Date posted:
May 19, 2021
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Answers (1)
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The cost accountant of Amazuri limited has provided the following statement of costs, profit and selling price per unit of a certain product.
(Solved)
The cost accountant of Amazuri limited has provided the following statement of costs, profit and selling price per unit of a certain product.
Date posted:
May 19, 2021
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Answers (1)
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Outline three uses of functions in business.
(Solved)
Outline three uses of functions in business.
Date posted:
May 19, 2021
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Answers (1)
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New Horizon Limited deals in production of a product named 'Wonder'. The table below shows the total revenue and the total cost of the company...
(Solved)
New Horizon Limited deals in production of a product named 'Wonder'. The table below shows the total revenue and the total cost of the company at different quantity levels of 'Wonder'.
Date posted:
May 19, 2021
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Answers (1)
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Emma Ayoo is considering investing Sh. 1,000,000 for a period of two years.The data below relates to interest rates of three investment opportunities available to...
(Solved)
Emma Ayoo is considering investing Sh. 1,000,000 for a period of two years.The data below relates to interest rates of three investment opportunities available to Emma Ayoo.
Date posted:
May 19, 2021
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Answers (1)
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Joe Mwamburi has been contacted by Ujenzi ltd. to supply 20,000 units of product 'Zee' at a unit price of Sh. 600.
(Solved)
Joe Mwamburi has been contacted by Ujenzi ltd. to supply 20,000 units of product 'Zee' at a unit price of Sh. 600.
Date posted:
May 19, 2021
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Answers (1)
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Differentiate between biased error and unbiased error.
(Solved)
Differentiate between biased error and unbiased error.
Date posted:
May 19, 2021
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Answers (1)
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The cost functions of Emmax ltd. is partly constant and partly varies with the number of units produced. During the months of September and October...
(Solved)
The cost functions of Emmax ltd. is partly constant and partly varies with the number of units produced. During the months of September and October 2011, the data for Emmax ltd was as follows.
Date posted:
May 19, 2021
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Answers (1)
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A trader estimates that sales for the coming year from four to his outlet stores will be Sh. 950,000, Sh. 1,200,000, Sh. 1,500,000, and Sh....
(Solved)
A trader estimates that sales for the coming year from four to his outlet stores will be Sh. 950,000, Sh. 1,200,000, Sh. 1,500,000, and Sh. 900,000 respectively. The traders sales estimates are correct to Sh. 10,000. The associated costs of production are also uncertain and are estimated as follows:
Date posted:
May 19, 2021
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Answers (1)