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Solve 3x - 5 < 16

When solving inequalities, you should treat them like solving any regular equation that you are used to (ie. whatever operation you perform on the left hand side, you must perform on the right hand side a...

Answered by Mylan R. • Maths tutor

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Factorise a^2 + a - 30

This is a quadratic equation in the form ax²+bx+c. As the three terms don't have a common factor we cannot factorise this into one bracket, instead we will factorise it into two. In order to do...

Answered by Isabella G. • Maths tutor

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Factorise x^2+3x-4

Answer is:(x-1)(x+4)

Answered by Tahmina A. • Maths tutor

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Ms Henderson has two jars of sweets. The jars contain the same number of sweets in total. 25% of the sweets in Jar A are mint. Two fifths of the sweets in Jar B are mint. There are 10 mint sweets in Jar A, how many mint sweets are there in Jar B?

For this question we should be familiar with percentages and their equivalents in fraction. Since they have the same number of sweets, we calculate first the total number of sweets there is in the jars an...

Answered by Pablo M. • Maths tutor

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Solve the simultaneous equations using the substitution method. 2y+x=8 and 1+y=2x.

First point out that it makes sense to solve this system of equations using the substitution method because one of the variables can easily be isolated without multiplication or division.(Step 1:) Label t...

Answered by Chris M. • Maths tutor

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