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Dipen and Nisha are planning their wedding reception. Nisha says, “I want to invite 70 guests.” Dipen says, “If we invite one-fifth fewer guests, we will save more than £500” Is Dipen correct? (Taken from Nov 2014 AQA Unit 2)

Need to calculate two things in order to answer the question:

1) Total cost of Nisha's 70 guests.

2) Total cost of Dipen's 'one-fifth fewer' guests.

For Nishen...

AN
Answered by Alex N. Maths tutor
5644 Views

Differentiate y=x*ln(x^3-5)

We can immediately see that more than differentiation rule will be needed here. The expression in question is the product of two smaller expressions, so the product rule may be useful. But to apply the...

NN
Answered by Nat N. Maths tutor
6736 Views

Find the solutions to x^3+4x^2+x-5=1

These cubic equations are usually fairly simple once the method is known, firstly make the right hand side (RHS) equal to zero by subtracting 1 from both sides:

x^3+4x^2+x-6=0

...

LH
Answered by Luke H. Maths tutor
4853 Views

What's the difference between the mean, median and mode?

The mean, median and mode are three types of averages which you will be asked about in your GCSE maths exam.

The best way to learn maths is by by doing it or at least runni...

TK
Answered by Thomas K. Maths tutor
9521 Views

How do I factorise a quadratic equation?

Firstly, make sure you agree that a quadratic equation is an equation of the form y = ax2 + bx + c where a,b,c ar...

GL
Answered by Gemma L. Maths tutor
5276 Views

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