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The question can be written algebraically, as:(a) 3t + 2c = 7.80(b) 5t + 4c = 14.20To work out the individual costs, we need to make one of the sets of variables equal. We can do this by multiplying the e...

0.14*525 = 73.5Therefore, £73.50 is the answer.

Where the angles of a triangle A+B+C = 180 degrees, then if follows that (where A = 90, B = 2x + 30, C = 2x):180 = 90 + 2x + 30 + 2x180 = 120 + 4x60 = 4x15 = xTherefore, it follows that A = 90, B = 60, C ...

Firstly, this differential equation should be solved using the separation of variables method, where all y terms are moved the left hand side of the equation and all x terms are moved to the right hand si...

The decimal point needs to move to the left as the number is larger then 10 so the power of 10 in the answer will be positive.870000000.87000000.8700000.870000.87000.8700.870.87.8.7The decimal point moves...