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How can you factorise quadratics with a an x^2 coefficient higher than one?

If we take an example question such as 20x 2 - 130 x = -20020x 2 - 130 x = -200 Divide by 10 to simplify2x 2 - 13x = -20 Take all of the terms to the left2x 2 - 13x +20 = 0 Now use this technique. Multiply a...
VT
Answered by Vahgisha T. • Maths tutor
2822 Views

What is the difference between atom economy and percentage yield?

First I will start by defining the two terms. Atom economy is calculated by dividing the total relative molecular mass of the desired product over the total relative molecular mass of the reactants. You can ...
VT
6065 Views

What is diffusion, and what are the factors that affect the rate of diffusion

Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration . This ...
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Answered by Delwin J. • Biology tutor
3030 Views

Given x=Sqrt(3)sin(2t) and y=4cos^2(t), where 0<t<pi. Show that dy/dx = kSqrt(3)tan(2t).

Differentiating the equation for x with respect to t, we get: dx/dt=2Sqrt(3)cos(2t);Take the reciprocal of dx/dt to get dt/dx=1/[2Sqrt(3)cos(2t)]Using a trigonometric identity on the equation for y, we get: ...
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Answered by Peter C. • Maths tutor
5367 Views

There are a number of push and pull factors that cause rapid urbanisation in lowincome developing countries (LIDCs). Explain how two push factors cause rapid urbanisation in LIDCs.

One push factor that can cause rapid urbanisation in LIDCs are the lower levels of education quality within rural areas. For example in China, rural Tibet has an illiteracy rate of 43% compared with the more...
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Answered by Hannah M. • Geography tutor
4442 Views