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Qu'est ce que nous pouvons faire pour reduire la gaspillage?

Il y a plein de choses á faire pour reduire la gaspillage. Une methode trés efficace est á faire beaucoup de recyclage, parce qu'on peut sauver des matériaux de la décharge immediatement, et c'est vraiment f...
JW
Answered by Joe W. • French tutor
2372 Views

Wird die Technologie immer mehr problematisch werden? Beschreib deine Meinung dazu.

Die Technologie wird immer mehr in der heutigen Gesellschaft benutzt werden. Heutzutage kann man ohne eine Handy nicht leben, wird es oft gesagt. Wir benutzten die Handys und die Computer viel und brauchen s...
JW
Answered by Joe W. • German tutor
2318 Views

x^2 - 5x - 12 = 2, solve for x

RHS should always be 0 so start by taking that across.Now we want two numbers, they need to add up to make - 5 and multiply to make -14.Solve for this and we get -7 and +2.Use this information to factorise: ...
PS
Answered by Pratinav S. • Maths tutor
3820 Views

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

Let tins be represented by XLet packets be represented by Y 5X= 1750X=350 4X+3Y=14904(350)+3Y=14901400+3Y=14903Y=90Y=30 3X+2Y= (3x350) + (2x30)= 1050+ 60= 1110
JC
Answered by Joe C. • Maths tutor
3066 Views

A-level - How to differentiate e^x where x is more complicated?

For exampe: e 4x^3 The way to look at this is, the differential of e 4x^3 = the expression itself ( e 4x^3 ) multiplied by the differential of whatever e is to the power of.In this example the differential o...
JC
Answered by Jake C. • Maths tutor
3921 Views