Top answers

Find the derivative of f(x) = 2xe^x

So with these kind of questions they tend to be more of a first part to a question, probably worth about two marks on an A Level exam.The first thing to spot with this question is that f(x) contains a produc...
FW
Answered by Fabian W. • Maths tutor
8966 Views

You have 2 fair dice with 6 sides and you roll them both, what's the probability that the sum of rolled numbers will be 11?

So to get 11 you could roll a 5 and a 6 or a 6 and a 5.Probability of rolling 5 and 6 = 1/6 x 1/6 = 1/36Probability or rolling 6 and 5 = 1/6 x 1/6 = 1/36So probability of rolling an 11 is 2/36
MC
Answered by Marta C. • Maths tutor
2681 Views

Solve the simultaneous equations below: 6x + 12y = 60, x + 6y = 20

Here I would include all the working out. If the question was different, I'd also draw more diagrams and illustrate the question better, as I believe it's easier to remember and understand that way.x = 5y = 2.5
MC
Answered by Marta C. • Maths tutor
2386 Views

Daniel and Mohammed buy concert tickets for £63. All the concert tickets are the same price. Daniel pays £24.50 for 7 tickets. How many tickets does Mohammed buy? .

24.5 Divided by 7 = 3.5.63-24.5= 38.538.5 Divided by 3.5 = 11
DH
Answered by Danny H. • Maths tutor
2721 Views

32sqrt 2 = 2^a, find the value of a

Ok so this is a typical exam questions worth around 3-4 marks depending on which exam board you are sitting with.To start solving this problem, we are looking for 2 to the power of "something" - so...
SM
Answered by Shannon M. • Maths tutor
11653 Views