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4x+9y=59.5 and x+y=8. Find the values of x and y.

Firstly, take the second equation and make either x or y the subject, which means to make it either x equals or y equals. To make x the subject, we take y away from both sides giving x=8-y. Then, substitute ...
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Answered by Bethany K. • Maths tutor
5464 Views

What is algebra used for?

Ok I see why you are asking yourself this since right now you are only expressing certain formulae in a different way. Let me first talk about something else before giving you this answer. When you were in y...
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Answered by Mohsin Z. • Maths tutor
4653 Views

Work out 2(3/4)*1(5/7). Give your answer in mixed number form.

First convert all fractions into improper fractions: 11/4 12/7 Then break down the nominator and denominators into their lowest common denominators (11 3 4)/(4 7) Cancel the common factors on the nominator a...
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Answered by Nilja S. • Maths tutor
8373 Views

Solve the linear equation 12x - 4 = 3x + 2

The objective of this question is to find the solution, what is x equal to? The first thing to do is try to get all x terms on one side of the equation and all non x terms on the other. Here we have positive...
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Answered by Diogo F. • Maths tutor
5977 Views

Michael is saving for new iPhone. He gets £30 as pocket money per week, however he spends 20% of the whole amount for leisure and his savings only consists of the residue amount. If an iPhone costs £600 how many weeks would Michael need to save for it?

Given: £30 pounds per week 20% = 0.2 = 1/5 - spending on leisure To find: a) Residue amount (Ra) b) How many weeks does Michael need to save (Tw) Solution: a) To the find residue amount we must remove the le...
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Answered by Nikola N. • Maths tutor
3964 Views