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Maths
GCSE

Work out: 3 ½ – 2 ⅓ Give your answer as a improper fraction

3 ½ = 7/22 ⅓ = 7/3To add or subtract 2 fractions, the denominator (bottom number) must be the same. To create a common denominator we can multiply the first fraction by 3 and the second by 2.This gives us...

MS
Answered by Mai S. Maths tutor
7849 Views

Solve 5x^2 = 10x + 4 , to 2 decimal places.

First rearrange to get 5x2 - 10x - 4 = 0 , by subtracting 10x and 4 from both sides of the equation. Here, we can use the quadratic formula which is x = -b+- sqrt(b2 -4ac) / 2a. In o...

AP
Answered by Alexander P. Maths tutor
14007 Views

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

To answer this question you need to write down and solve an equation. Let's call t a tin of soup and p, a packet. We have: 5t=1750 and 4t+3p=1490. We want to know how much is 3t+2p. 1. Isolate t to find v...

TD
Answered by Tutor164604 D. Maths tutor
4159 Views

expand and simplify x(3x-2)(x+1)

first expand the brackets (3x-2)(x+1) to get 3x2-2x+3x-2, then we can simplify this to get 3x2+x-2.Then multiply this by x to get the final answer: 3x3+x2-2x.

NA
Answered by Natalia A. Maths tutor
8620 Views

Bananas cost 30p each. Oranges cost 45p each. Write an expression, in pence, for the cost of x bananas and y oranges..

Each banana cost 30p so the total price for bananas will be "number of bananas x 30". Here, bananas are called by the variable x so this number can be written as "30x" and will change ...

LP
Answered by Léa P. Maths tutor
4741 Views

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