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Solve the simultaneous equations, make sure to show clear algebraic working: 3x + 5y = 14, 4x + 3y = 4

3x + 5y = 14 (times this entire equation by 3) --> 9x + 15y = 42 4x + 3y = 4 (times this entire equation by 5) --> 20x + 15y = 20Now both of the simultaneous equations have 15y, so you can subtract ...

Answered by Alexander T. • Maths tutor

5649 Views

What is cracking of hydrocarbon molecules?

Cracking is when large hydrocarbon molecules are broken down into smaller ones using a catalyst - one alkane and one alkene are formed.Alkanes are hydrocarbons with only single bonds.Alkenes have one doub...

Answered by Valeria W. • Chemistry tutor

2700 Views

done

Answered by Mohammed A. • Biology tutor

1130 Views

Using a case study discuss the problems of rapid rural to urban migration?

India is an example of an NEE, a newly emerging economy, this is due to the rapid rural to urban migration that has been taking place. One of the biggest problems with people moving from rural areas to ur...

Answered by Millie T. • Geography tutor

2249 Views

Express cos(2x) in the form acos^2(x) + b, where a and b are constants.

we first remember the double angle formula, a really important formula. cos(2x) = cos²(x) - sin²(x).We know that sin²(x) + cos²(x) = 1, therefore, cos(2x) = cos...

Answered by Jack P. • Maths tutor

6879 Views