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How do I solve simultaneous equations?

When given two simultaneous equations, the first step is to make the factor of one letter equal in both equations. For example, in the example below, we will try to make both equations contain '2b':
...

LB
Answered by Lois B. Maths tutor
3740 Views

What is actus reus and mens rea?

Every crime (with a few exceptions) has the elements of actus reus (“guilty act”) which means the act of committing the crime (for example the act of stabbing someone in the case of murder) and mens rea (...

SG
Answered by Sebastian G. Law tutor
9820 Views

Factorise 3x^2 + 15x

To factorise an equation you need to look for factors that all the elements of the equation (3x^2 and 15x) have in common. You can do this all at one or in steps, to start with you can see that both parts...

EF
Answered by Eve F. Maths tutor
15090 Views

Discuss some of the limitations of the use of tidal energy.

One of the limitations include cost, of setup, installation and maintenance. But more sublty there are undetermined envronmental implications, and issues with the energy storage and distribution due to th...

HW
2559 Views

A curve has parametric equations x=t(t-1), y=4t/(1-t). The point S on the curve has parameter t=-1. Show that the tangent to the curve at S has equation x+3y+4=0.

To anwser this question we need to find a linear equation of the form y=mx+c which we can rearrange to give the desired equation. Firstly, we must find the gradient at the point S given by dy/dx. Using th...

MF
Answered by Marcus F. Maths tutor
8238 Views

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