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La mia famiglia è composta da cinque persone: me, mia madre, mio padre e i miei due fratelli gemelli. Mia madre ha quaranta anni, lavora in banca, alla BNL; mio padre, quarantadue anni, fa l'nsegnante e i mi...

To balance redox equations, do the following steps: -Divide into 2 half equations -Balance the formula EXCEPT for oxygen and hydrogen -Balance the number of oxygens by adding water -Balance the number of hyd...

Remeber to make your point first, ensure that the marker knows exactly what you are going to be talking about in that paragraph. Once you have made this point keep referring back to it as you write your para...

Depending on what you prefer, you can either substitute or you can try to solve this by elimination. I'll explain both. 1) x - 2y = 1 2) x 2 - xy +y 2 = 1 If solving by elimination, you need to start thinkin...

A sequence means a pattern, so the first thing to do is find the pattern. First try seeing what the difference between the numbers is. 15-7=8, 8-7=1, 1-7=6, so the pattern must be to subtract 7 each time. Th...