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Firstly, differentiate the equation y=x³+3x²+4x+2 to find the gradient function. The gradient function is dy/dx and is found to be 3x²+6x+4 = f'(x) after differentiation. ...

Firstly number the two equations 1 and 2 for simplicity. To solve this we want to eliminate one of the variables, x or y, so we start by looking at the equations and seeing if we can add or subtract them ...

Aerobic - requires oxygen, releases carbon dioxide and water, produces much more energy for the same amount of glucose.

Anaerobic - doesn't require oxygen, releases lactic acid, much less efficient...

This is a displacement reaction as the more reactive halogen (chlorine) will displace the halide ion from the ionic compound (lithium bromide). This will result in the bromide being displaced and forming ...

Since force = mass x acceleration, acceleration = 4 as the change in velocity is 4 m/s and m = 45 as the mass of Hannah is 45 kg and hence the force required to be exerted on her is 4*45 which is 180N.