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Maths
GCSE

Dipen and Nisha are planning a 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?

Prices are: £40 per guest. Total cost reduced by 5% with over 60 guests. 

First, we work out the cost of Nisha's suggestion.

£40 x 70 guests = 2800

To find 5% ...

Answered by Lily M. Maths tutor
6702 Views

How do I solve a quadratic equation?

The best way to solve a quadratic function is to put brackets into the equation.

Start with an example

Find x when y=0 for the function 

y=x*2 + 5...

Answered by Rosiered B. Maths tutor
3554 Views

Rearrange the formula to make 'y' the subject: x = (1 - 2y)/(3 +4y)

Ok so we need to get 'y' by itself on the left hand side of equal sign. We will first try to remove the denominator by multiplying 'x' by (3+4y). This gives (3+4y)x = 1 - 2y.

We will then...

Answered by Wajiha I. Maths tutor
16337 Views

What is the highest common factor of 24 and 90?

To find the highest common factor of 24 and 90 we do this in three steps:
1. Find the prime factorisation of the two numbers. This means rewrite each given number as a product of onl...

Answered by Joseph P. Maths tutor
11955 Views

Solve the quadratic 2x^2+7x+6 by completing the square

All quadratic equations take the general form:

ax2+bx+c=0

The first step used to comlete the square is to divide the whole equat...

Answered by Henry N. Maths tutor
15214 Views

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