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[1 -2; -5 -4] determinant = {1 * (-4)} - {-5 * (-2)} = -4 - 10 = -14

A quadratic equation is an equations of the form:   ax² + bx + c = 0 (1)  where a is not 0. The ways of finding the roots are:  quadratic formula, factorising, substituting, completing the squa...

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 obj...

When an oceanic and a continental plate move towards each other and collide, the oceanic crust is subducted into the upper mantle as it's much denser than continental crust. As the oceanic crust descends ...

Water consists of two hydrogen atoms covalently bonded to an oxygen atom, the atoms oxygen has 6 outer shell electrons, and wach hydrogen donates one, this results in the structure having 8 electrons, mea...