# Recently Submitted Homework Problems: maths

98. a father is 3 times older than his son and the sum of their ages is 40 years. find their present age?(Answered)

1298. Find the volume if the area bounded by the curve y=x^3+1, the x axis are x=0 and x=3 is is rotated around the x-axis(Answered)

1353. in 2003 the population of baytown was 4739 the population goes up 4% every year. What is the population of Baytown for each year from 2004 to 2008(Answered)

1457. it is a whole question but iwill write 2 examlpes so i understand the answer

1.

(x-3y) divided by 4 as fraction

2. 2 divided by (2a-3b) as fraction(Answered)

1572. Find the no which when divided by 17 ,16,15 and the remainder is 3.10,0 respectively. This means u have to find

that no which is divided by 17 then it leaves the remainder 3; when divided by 16 leaves remainder 10; and when divided by 15 leaves remainder 0.(Answered)

1590. solve using inverse matrix method

x+y+z=1

3x+5y+6z=4

9x+26y+36z=16(Answered)

1603. Can you please help me out with these math questions?

Given that:

a. A(n+1) = A(n)+2n+3, with A(0). Find A(6)

b. u(n+2)-2u(n+1)+u(n)=1, with u(0)=2 and u(1)= -1. Find u(6).(Answered)

1780. locate the integers on numberline -20(Answered)

1780. locate the integers on numberline -20(Answered)

1884. root x + y =11 and x + root y =7 solve it by elimination method (Answered)

1884. root x + y =11 and x + root y =7 solve it by elimination method (Answered)

2024. A ladder that is 6 meters long is placed against a wall. It makes an angle of 34 degrees with the wall. Find

a)how high up the wall it reaches,

b)the distance the base of the ladder is away from the wall.

How do you approach this problem?(Answered)

2517. substitute m=6 and n=-3 express and evaluate please help(Answered)

2537. The selling price of 12 pens is equal to the cost price of 14 pens. Find the gain percent.(Answered)

2635. Prove that 2 versinA + cos2A = 1+versin2A(Answered)

2689. please explain this math question:

the altitude of a parallelogram is half of the length of its base. the area of the parallelogram is 50sq.m. find the base and the altitude.(Answered)

2975. (614.9 times 10`7.Is this number in scientific notation?Explain.(Answered)

3062. Differentiation/product rule:

determine the rate of change of voltage given that v =5tsin(2t)volts,when t=0.2s(Answered)

3212. A company sells two products, Product A and Product B. If a customer buys only Product A he will be charged $6.25 per 5lbs before receiving an 8% discount. If only Product B is purchased, then the rate charge is $1.99 per half-pound with a 5% discount. However, if both products are purchased together, then the charge for Product A is decreased by 1/8, while that of Product B is unchanged.

Below is a table showing the quantities of products purchased by 3 customers. Calculate the total bill for each customer.

cutomers account #

1.000744

2.000995

3.000830

Product A

1.000744-0lbs

2.000995-12.5lbs

3.000830-10lbs

productB

1.000744-7.4lbs

2.000995-0lbs

3.000830-6lbs

(Answered)

3512. A TRENCH OF 2.5 MTS AND DEPTH OF 2 MTS IS DUG OUTSIDE AN RECTANGLE FEILD OF LENGTH OF 250 MTS AND BREADTH OF 200 MTS. THE MUD FROM THE TRENCH WAS EVENLY DISTRIBUTED IN THE RECTANGULAR FIELD. FIND THE INCREASE IN THE HEIGHT OF THE FIELD. (Answered)

3805. If A and B are the two acute angles in a right triangle, show that:

tan(A - B) = -cot 2A.

(Answered)

3942. Solve

-3x = - 18(Answered)

3942. Solve

-3x = - 18(Answered)

4203. cos(pi/8)*cos(3pi/8)*cos(7pi/8)*cos(5pi/8)

to find value......(Answered)

4289. Solve the following pair of simultaneous equations 2x + 5y = 6 1/2

5x - 2y =9(Answered)

5276. 20% of a man journey is 8km . the man complete journey is(Answered)

5388. 3x-5=10(Answered)

5444. How do you calculate £77 divided by £2.75 without a calculator?(Answered)

5596. x+1/3 = X-2/4 + 1/3(Answered)

5595. Two numbers are such that the ratio between them is 3:5. If each is increased by 10, the ratio

between the new numbers so formed is 5:7. Find the original numbers.

(Answered)

5860. Simultaneous equations:

2x+y=5

x+3y=5

Find x and y(Answered)