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An Island on a map is measured to be 4cm across. The scale of the map is 4cm to 500m. How long is the island in km?

The island is 2km. If the scale is 1cm:500m we need to multiply both left and right sides by 4 to get to the 4cm that was measured. This gets us 4cm: 2000m . We now need to convert 2000m to km which gives us...
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Answered by David T. • Maths tutor
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Charlie goes to the shop and buys six cookies, three ice creams, and four chocolates. Cookies cost 60p, Ice creams cost £1.70 and chocolates cost 65p. How much does Charlie spend?

To find out how much Charlie spends in total, you have to figure out how much he spends on each type of thing, and then add them together. To find how much he spends on each kind of thing, you have to multip...
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Answered by Dan T. • Maths tutor
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Make x the subject of the equation: y = 4(x+2)/5x-1

1st multiply out the brackets: y = 4x + 8 / 5x - 1 Next multiply both sides by the denominator onf the RHS: y(5x-1) = 4x + 8 Again, multiply out the brackets: 5xy - y = 4x + 8 Rearrange the equation so that ...
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Answered by Nikilesh R. • Maths tutor
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What is 2/5 + 3/4 ?

2/5 = 8/20 3/4 = 15/20 8/20 + 15/20 = 23/20 23/20 = 1 and 3/20
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Answered by Kaya S. • Maths tutor
3017 Views

Solve this quadratic equation by factorising: x^2-x-6=0

In order to solve this equation (x 2 -x-6=0) using the factorising method, you should first find the two numbers that mutiply to -6 and add to -1. The two numbers that do this are 2 and -3. Therefore, (x+2) ...
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Answered by Arrthe N. • Maths tutor
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