2,563 Answered Questions for the topic Maths

Maths Math Help

03/13/15

Help in rearranging terms
Given that Q=W/(1-(T0/T)) and Q=a(T-T0)rearrange so that T is the subject. The final answer is: T=T0 + (W/2a) + (1 + sqrt(1+(4aT0/W)) But I just don't know how to get to it...
Follows • 3
Expert Answers •2

03/10/15

Quadratic models: Parabola graph of ax^2+bx+c
A parabola graph has the Vertex and Y-intercept is A(0,8) and x-intercepts of B(3,0) and C(-3,0)....   Question 1) The parabola has the equation ax^2+bx+c , Use "A(0.8)" to find the value of "b"... more
Follows • 1
Expert Answers •2
Maths Roots

03/08/15

Could anyone help me with a maths problem?
If f(x) = (3x + a), determine the values of a fro which, f(x2 + x + 2) - f(3x - a) = 0 will have really roots.
Follows • 1
Expert Answers •1

03/08/15

Green's function and differential equation
By using the Green's function, solve: y''-αy =e^(-αx) with initial conditions y(0)=y'(0) = 0thank you to whoever can do this in detail for me :)
Follows • 3
Expert Answers •1

03/05/15

need help on this question, dont understand it.
A 15 litre cylinder contains 0.35kg of butane gas (C4 H10). Assuming ideal gas behaviour, calculate the pressure of the gas if the cylinder is stored at 50 Fahrenheit.
Follows • 1
Expert Answers •1
Maths

02/28/15

Sorry. Maths question.
I have fifteen books in total. If five of them are written by me, and I pick four random books to take on holiday, what is the probability that exactly 2 of my books are written by me?
Follows • 2
Expert Answers •1

02/26/15

Harmonic oscillation x=sin?nt?
Hey guys,Hope someone can give me a hand on this one?A particle is subjected to undamped harmonic oscillation described by the equation:x=sinωntProve that the linear acceleration of the particle is... more
Follows • 2
Expert Answers •1

02/24/15

what is the formula for finding n in compound interest
A=P(1+(r/100))^n
Follows • 2
Expert Answers •1
Maths

02/18/15

Which vinegar listed containing a certain percentage of acetic acid is the best value for money?
4.73% of acetic acid in the vinegar for £0.83 6.19% £1.15 5.04% £1.15 5.21% £3.00 5.13% £0.50 6.1% £1.50
Follows • 2
Expert Answers •1
Maths

02/18/15

If 1140ml of vinegar contains 4.75% of acetic acid how do I work out the percent of acetic acid in 1ml?
If 1140ml of vinegar contains 4.75% of acetic acid how do I work out the percent of acetic acid in 1ml?
Follows • 4
Expert Answers •3

02/15/15

Limits of sequences, please help!
limn->infinite[ (-1)n/(n3-12)}  I dont know what to do with (-1)n, if it's equal to infinite then if I divide by n3, it's infinite over infinite. I dont understand :S. And the question is if... more
Follows • 2
Expert Answers •1

02/10/15

prove that: 1-cos2?/sin2?=tan?
Prove that:   1-cos2θ/sin2θ=tanθ   Please show workings.   Thank you.
Follows • 2
Expert Answers •1

02/10/15

show that: [tan(x+p/4).tan(x-p/4)]=1
Show that:[tan(x+π/4).tan(x-π/4)]=1   please show workings.   I ended up at. 1.tan(x)+1/1+tan(x)=1not sure i'm right though.
Follows • 2
Expert Answers •1
Maths Math Math Help

02/03/15

Prove that.....
Anyone help me solve this?Prove that: cos(y-Π)+sin(y+Π/2)=0    
Follows • 2
Expert Answers •1
Maths

02/02/15

maths problem
Rearrange this formula to make b the subject. b) Factorise x2+ x — 2 hence simplify x^2+x-2 over x^2-4
Follows • 2
Expert Answers •1
Maths

02/02/15

simultaneous equation
2x+3y=15.5   x+y=6
Follows • 2
Expert Answers •1
Maths

02/02/15

maths problem
12 ) y is directly proportional to x3 When x = 2, y = 20. (a) Find y when x = 8. ¦ (b) Find x when y = 1000.
Follows • 1
Expert Answers •1
Maths

02/02/15

maths problem
 On another special offer day, all prices are reduced by 40%. At the end of the day. special offer prices go back to normal. By what percentage do special offer prices increase at the end of the day?
Follows • 2
Expert Answers •1

02/02/15

maths problem
A basket ball team has 5 players and one reserve. the mean weight of the 5 players is 58kg the reserve weighs 64 kg whats the mean weight of all 6 players
Follows • 2
Expert Answers •2

01/30/15

Find the partial fraction of the following:
I have worked this out myself but it's not the same as my friend is getting so we need someone else to give it ago please, again please show your steps:   Find the partial fraction of the... more
Follows • 3
Expert Answers •2
Maths Terms

01/30/15

Rewrite the following in terms of “a”: y=xe^((a/vw) )
Can someone help me with this one please.   Rewrite the following in terms of “a”: y=xe(a/vw)   I'm not sure of the steps on how to achieve the correct answer.
Follows • 2
Expert Answers •1
Maths

01/28/15

A cell phone was marked at 40% above the cost price and a discount of 30% was given its marked price. Find the gain or loss percent made by the shopkeeper.
explain me with steps please
Follows • 3
Expert Answers •2
Maths

01/26/15

a bottle contains 750ml of lemonade. jenny drinks 50 % more than marcuss. between them the two friends finish the bottle. How much did Jenny drink
ASAP answer
Follows • 2
Expert Answers •1

01/13/15

probobility maths word problem help on A AND B please
when Jake catches the bus to school in the morning, it may be early, on time or late.  The probability that it is early is 0.05 The probability that it is late is... more
Follows • 2
Expert Answers •1
Maths

01/12/15

if the 1st term of a geometric sequence is 3 and the last is 192 and the sum of 1st seven terms is 381 find common ratio i
plese help im confused
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.