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Hurricanes will only form where the sea surface temperature is 27 degrees C or above. This area of the ocean is located between the Tropics of Cancer and Capricorn, otherwise known as the ITCZ. The sea su...

Solving by elimination

1. multiply the equations by a number so that the number in front of either x or y is the same for both equations:

3x + 4y = 10 (X2) --> 6x ...

Step 1:

• Look at the molecular formula of the hydrocarbon you have been given.

• (This is the formula that tells you exactly how many hydrogens and ...

The Roman forum was both a political and religious centre. Various temples and shrines improved the appearance of the forum and served the dual purpose of being used for both religious and political purpo...

The first thing to do in this problem is to expand the brackets. This means we times whatever is in the bracket by the number on the outside, in this instance the number is 3. We do not worry about the ri...