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To answer this we need to use the equation Q = MC(T1-T2)

We want to know what T2 is (ie the temperature after one hour).

So rearrange the equation to get T2 = T1 - Q/MC

No substitute ...

There are many different ways in which a semicolon can be used. 

The first, and the most common is to link two similar clauses together. For example, you could say, 'The lady had a cat. The cat was...

1. Start by writing the equation out again: x² + 5x + 6 = 0

2. I do it by thinking which two numbers add together to = 5 and which same two numbers multiply to = 6. The an...

i) (2sqrt(7))² = 2²  sqrt(7)² = 4 * 7 = 28      (1 mark) ii) First of all substitute the answer from above.    ((2 * sqrt(7))² + 8) / (3 + sqrt(7)) = (...

64/4/4=4

4x4=16

n.b no square root function on my divice