Top answers

A factory produces cartons each box has height h and base dimensions 2x, x and surface area A. Given that the capacity of a carton has to be 1030cm^3, (a) Using calculus find the value of x for which A is a minimum. (b) Calculate the minimum value of A.

To calculate the minimum value of A we first need to establish an equation for A. The surface area of a cuboid is relatively simple to figure out we simply work out the area of the faces and sum them togethe...
JC
Answered by Jacob C. • Maths tutor
5087 Views

By factorising, solve the quadratic equation x^2-8x+15=0

First we find two numbers that that add up to -8 and multiply to make 15. In this case the numbers are -3 and -5. This means we can now factorise the quadratic to give (x - 5) (x - 3) = 0. For the above to b...
IN
Answered by Ivo N. • Maths tutor
4030 Views

How do I form the perfect tense in French?

Forming the perfect tense in French is simple: you need to firstly decide whether the verb you want to conjugate is avoir or être. If the verb is avoir, then you must first conjugate avoir in the present ten...
TD
Answered by Tutor45079 D. • French tutor
2969 Views

Comparing the themes of ‘death’ in ‘The Man He Killed’ (Thomas Hardy) and ‘Anthem for Doomed Youth’ (Wilfred Owen).

Another way in which the theme of death is shown is through the structure of these two poems. There are differences in the way the poems are structured. Hardy’s ‘The Man He Killed’ is written in quatrains, w...
JH
12012 Views

Some babies are born with a hole between the right and the left ventricles. These babies are unable to get enough oxygen to their tissues. Suggest why.

This question is an example of the 'suggest' questions that are asked. 'The hole is due to the failure of the foramen ovale to close. As a result, oxygenated blood from the left ventricle mixes with deoxygen...
LH
Answered by Lamis H. • Biology tutor
11408 Views