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Jo has the following 9 coins in her purse: 10p, 2p, 2p, 50p, 10p, 1p, 20p, 2p, 2p. Work out the median, mean, mode and range.

To work out the median of a set of numbers we first place them in order: 1p, 2p, 2p, 2p, 2p, 10p, 10p, 20p, 50p Then the median is the middle value in the list, in this case 2p. To work out the mean we must ...
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Answered by Chris B. • Maths tutor
6117 Views

How would I differentiate something with the product rule?

Okay so, first of all the product rule in itself is fairly simple. Take the product of a function "u" and a function "v" to be a compound function. You can write this as "uv". T...
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Answered by Shivam D. • Maths tutor
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How would I solve the equation 25^x = 5^(4x+1)?

You would have to rewrite 25 as 5^2 hence 25^x = (5^2)^x = 5^(2*x). Then 5^(2x) = 5^(4x+1) and therefore 2x = 4x + 1 hence 2x = -1 hence x = -1 / 2.
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Answered by Marius P. • Maths tutor
9552 Views

Emma has a digital photo. The photo has width 960 pixels and height 720 pixels. Write down the ratio of the width of the photo to the height of the photo. Give the ratio in its simplest form.

4:3 Working: 960:720 (divide by 10) 96:72 (divide by 8 as 8 is common multiple of both 96 and 72 (should know this from times tables)) 12:9 (divide by 3) 4:3 simplifying slowly and in small steps reduces the...
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Answered by Alexandra D. • Maths tutor
7348 Views

Expand 2x(x-3)

2x 2 - 6x
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Answered by Alexandra D. • Maths tutor
14499 Views