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find 12% of £550 (non calculator)

First find 10% which is £55Next find 1% which is 55/10 = £5.50As 12% = 10% + 1% + 1%,12%= £55 + £5.5+ £5.5= £66

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Answered by Sachin V. Maths tutor
4429 Views

How many thirds are there in 9?

In 1 there are 3 thirds so in 9 there will be 3x9 thirds which is 27 thirds.

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Answered by Sachin V. Maths tutor
3073 Views

give the values of x when 2x^2+5x-3=0

First we need to find two numbers that multiply to make ac and add to make b which are -6 and 5 in this case.The two numbers that do this are 6 and -1. Now we separate the 5x into 6x and -x. Putting this ...

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Answered by Sachin V. Maths tutor
2693 Views

A ball is thrown downwards from a height of 10m with speed of 5m/s, assuming g=10m/s^2, calculate the final velocity of the ball when it hits the ground

First recall the suvat equation: v^2=u^2+2as.
It is always handy to draw a diagram in physics to illustrate the problem.
Next, using u=5, a=10, s = 10, solve for v in the suvat equation, arrivi...

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Answered by Sachin V. Physics tutor
2065 Views

Integrate the function f(x) = 1/(4x-1)

t Using the fact that d/dx ( ln g(x)) = g'(x)/g(x), we can see that the integral of this function will be an ln function. From observing f(x) we see that if the answer was ln(4x-1) then f(x) would need to...

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Answered by Sachin V. Maths tutor
8305 Views

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