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Find the determinant of a 2*2 matrix.

[1 -2; -5 -4] determinant = {1 * (-4)} - {-5 * (-2)} = -4 - 10 = -14
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Answered by Rishabh A. • Maths tutor
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How do I find the roots of a quadratic equation?

A quadratic equation is an equations of the form: ax 2 + bx + c = 0 (1) where a is not 0. The ways of finding the roots are: quadratic formula, factorising, substituting, completing the square. Today, I'll c...
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Answered by Catriona M. • Maths tutor
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What is globalisation?

Globalisation is the process by which the world is becoming increasingly interconnected . Interconnectivity means that communication throughout the world has led to an increase in trade and cultural exchange...
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Answered by Olivia B. • Geography tutor
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To what extent do the main macroeconomic objectives conflict?

The five main macroeconomic objectives are balanced trade, a low and stable inflation rate, sustainable economic growth, low unemployment and a fair distribution of income. Some of these macroeconomic object...
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Answered by Ryan H. • Economics tutor
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Solve for x: 2x+3+((4x-1)/2)=10

Solve for x: 2x+3+((4x-1)/2)=10 First of all, move all the values on the left-hand side of the equation that are not in brackets over to the right-hand side of the equation so as to make the fraction (in bra...
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Answered by Luke H. • Maths tutor
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