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Maths
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what is the median, mode and mean?

the mean is the average value when you add together all of the numbers in your sample and then divide the result by the amount of numbers in the sample.the mode is the most common number in the sample, th...

AE
Answered by Amit E. Maths tutor
2524 Views

Given the equations: x + 3y = 1 and 2x - y = -5, solve for x and y.

Here we have 2 simultaneous equations including the variables x and y. Because we have x in one equation and 2x in another we can approach this in 2 ways. The first method is to obtain 2x in both equation...

JF
Answered by Jake F. Maths tutor
5444 Views

Rana sells 192 cakes in the ratio small : medium : large = 7 : 6 : 11. medium cakes are worth double small ones and large cakes triple small ones. If the cakes go for £532.48 how much is a small cake worth

First we can work out the actual number of small medium and large cakes. To do this we first add the ratio numbers together7+6+11 = 24We then divide the number of total cakes by this ratio number 192/24 =...

OR
Answered by Oliver R. Maths tutor
9057 Views

Calculate the indefinite integral of ln(x)?

This would be calculated using the integration by parts method: NOTE: You can consider the function ln(x) to be a constant of value 1 multiplied by ln(x)....

UO
Answered by Uwais O. Maths tutor
3856 Views

Jo wants to work out the solutions of x^2 + 3x – 5 = 0 She says, ‘‘The solutions cannot be worked out because x^2 + 3x – 5 does not factorise to (x + a)(x + b) where a and b are integers.’’ Is Jo correct?

She is not correct. We can solve a quadratic equation in other ways. The easiest way is to use the formula for quadratic equations.x = (-b +/- sq. root (b^2 - 4ac) / 2ax = -3 +/- sq. root 3^2 - 4x -5 / 2 ...

KA
Answered by Kirsty A. Maths tutor
3888 Views

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