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Why do modern liberals defend the principle of social welfare?

The principle of social welfare is the idea that the state has a responsibility to intervene in the lives of citizens in order to ensure a basic standard of living, for instance through policies such as p...

Answered by Holly R. • Government and Politics tutor

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A ladder 6·8m long is leaning against a wall. The foot of the ladder is 1·5m from the wall. Calculate the distance the ladder reaches up the wall.

We have a right angle triangle in this problem. We can use Pythagoras' theorem - the square of the hypotenuse is equal to the sum of the squares of the other two sides of the right angle triangle...

Answered by Mohan V. • Maths tutor

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[equ1] 3y − 6x = 3 [equ2] y y x 2 − x + 2 2 = 2

Firstly start by rearranging [equ1] to get y = 2x + 1 . Then substitute this result into [equ2] this will give you (2x + 1) (2x ) x . Simplify the equation and subtract two from both sides to 2 − x + 1 + ...

Answered by Alistair S. • Maths tutor

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How do you calculate the cross product of two vectors?

To calculate the cross product of two vectors you take the coordinates of vector 1 which are (x₁,y₁,z₁) and the coordinates of vector 2 which are (x₂,y₂

Answered by Michael K. • Further Mathematics tutor

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Formation of phosphodiester bond

(Answer supplemented with whiteboard annotations) As previously mentioned at GCSE, the sugarphosphate backbone is formed by a condensation reaction between the phosphate group of one DNA molecule and the ...

Answered by Mizanur R. • Biology tutor

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