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Change the subject of the formula F=(t^2+4b)/c to b.
b = (Fc-t^2)/4
Answered by Mayez H. •
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How do you solve simultaneous equations?
There are 10 boys and 20 girls in a class. In a class test, the mean score of the boys is 77. The mean score of the girls is 80. What is the mean score of the whole class?
Solve the simultaneous equations: 4x + 7y = 1, 3x + 10y = 15.
Factorise x^2 + 2x – 15
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