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Find the coordinates of the minimum point of the function y=(x-5)(2x-2)

At the minimum point the gradient is zero so dy/dx=0. To find dy/dx, first expand out the brackets so y=2x^2 - 12x + 10. Using differentiation dy/dx=4x - 12. At the minimum 4x-12=0 so 4x=12 therefore x=3....

PC
1967 Views

Simplify 8x-3+6x

we can know there are 3 terms in this polynomial. The basic rule to simplify it is to combine the similar terms. The “x” exists both in the “8x”and the “6x” , which means they are similar. Therefore we ca...

LY
Answered by Lanxin Y. Maths tutor
6810 Views

A kettle costs £50 in a sale. It was reduced by 30%. What was the original price of the kettle?

100% - 30% = 70%£50 = 70%£50/70 = 0.714£0.714 = 1%100% = £71.4

VM
Answered by Violeta M. Maths tutor
2689 Views

To what extent were Stalin’s five year plans a success?

First of all the question is asking you to define what success constitutes. In order to do this it is necessary to examine its aims. Stalin had three five year plans whose primary aim was to expand indust...

RB
Answered by Rufus B. History tutor
4474 Views

Calculate the relative formula mass of water.

The chemical formula for water is H2O, and this means it contains 2 hydrogen atoms and 1 oxygen atom. If you then look at the periodic table and find the relative atomic mass for each element y...

CR
22986 Views

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