# david t

Popular questions and responses by david t
1. ## mathematics

A frustum of a pyramid is 16 cm square at the bottom ,6 cm square at the top ,and 12 cm high.Find the volume of the frustum

2. ## mathematics

The mass of a sheet of metal varies jointly with its area and its thickness.A sheet of metal of area 250 cm square and thickness 1 mm has a mass of 200 g. (a) Find the formula which connects the mass Mg,the area A cm square and the thickness t mm. (b)

3. ## mathematics

A telephone company makes up its monthly bills as follows: a fixed charge of 800 naira plus a charge proportional to the number of units of call on the telephone .If it charge 2 naira per unit of call , calculate the total charges on (a) 80 units (b) 150

4. ## mathematics

The thickness of a book varies directly with thee number of pages in the book.A book is 1.8 cm thick and contains 350 pages .What is the thickness of the first 84 pages of the book?

5. ## mathematics

The cost of making a dress is partly constant and partly varies with the amount of time it takes to make the dress.If the dress takes 3 hours to make ,it costs 2700 naira. If it takes 5 hours to make the dress, it costs 3100 naira. Find the cost if it

6. ## mathematics

If x-3 is directly proportional to the square of y and x = 5 when y = 2,find x when y= 6.

7. ## mathematics

x is partly constant and partly varies with y.When y=5,x=19 and when y=10,x=34. (a) Find the relationship between x and y. (b) Hence find x when y = 7.

8. ## mathematics

If x-3 is directly proportional to the square of y and x=5 when y=2 ,find x when y=6

9. ## mathematics

If p is directly proportional q and p=4.5 when q = 12 ,find the relationship between p and q,p when q= 16,q when p= 2.4

10. ## physics

differentiate between true weight and apparent weight.

11. ## physics

vapour is a substance that is a mixture of two phases, name them.

12. ## English

(1) Covid- 19 patients who recovered from the disease is socially stigmatized. a. what is the grammatical name of the sentence. b. what is the grammatical function of the sentence. (2) I do not watch zee world because of its excessive adoration of

13. ## English

Identify the figures of speech in the sentences S/N Expression Figure of Speech 1. You are a living dead person if you have not read Jane Austen’s Pride and Prejudice! Answer: 2. They usually have green thoughts and green with envy each time. Answer: 3.

14. ## mathematics

In one month the reading on an office electricity meter changes from 9883 to 11146. (a)How many units of electricity did the office use? (b)The monthly PHCN tariff is 262 naira (demand charge) plus 9.70 naira per unit.What is the total charge for the

15. ## economics

The table below shows the continuous assement scores obtained by 30 selected ss1 students in economics. scores 1-5 6-10 11-15 16-20 21-25 26-30 frequency 2 5 3 10 8 2 (a) determine the mean score of the students. (b) calculate the modal score.

16. ## physics

If the relative density of a liquid is 0.34,what is the density of the liquid.

17. ## English

(1) You are no longer the man whom i used to know. a. what is the grammatical name of the sentence. b. what is the grammatical function of the sentence. (2) Chiamaka does not get distracted the moment she is in English Language class because she believes

18. ## English

(1) He is a coach whose record has been amazing. a. what is the grammatical name of the sentence. b. what is the grammatical function of the sentence. (2) Do you remember the restaurant where we ate launch. a. what is the grammatical name of the sentence.

19. ## mathematics

To encourage learning and business,computers do not attract VAT.Find how much VAT a school pays when buying the following items. item number unit price (naira) exclusive of vat computers 14 48000 electrical fittings 23 5200 staffroom chairs 18 9000

20. ## mathematics

A contractor supplied some items to a school.The contractor bill is shown below.If each amount includes 5%VAT,calculate how much the government receives as VAT. a. stationery -84000 naira,b.sport equipment -262500,c. computers- 672000,d. school lockers-

21. ## physics

Why is an object immersed in a liquid lighter than the same object in the air.

22. ## mathematics

A director in a parastatal earns 1600000 naira per annum. His wife died three years ago leaving him with four young children.How much tax does he pay if he claims an allowance of 24000 naira for insurance premiums?

23. ## mathematics

A man has a wife and six children(the oldest of whom is 13 years).He claims 32000 naira for a dependent relative .How much tax does he pay in a year in which he earns 670 000 naira?

24. ## physics

A rectangular tank of base 2m*1.5m and height 3m is filled with 7500kg of a liquid.The pressue at the middle of the tank is.