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In order to add or subtract terms to/from each other, both of their denominators (the number on the bottom of the fraction) must be the same. In this case they are different, so the first step is to try a...

2x²+6x-3=0To begin, we need to make sure x² is by itself, meaning that we divide the whole equation by 2. So from here we get (2x²+6x-3=0) / 2 = x²+3x-3/2=0. No...

Systematic sampling refers to a way of choosing participants for a study by taking a list of all participants in a population and choosing every nth number from the list. For example, every 10th or 15th p...

x= (3 + ln(11))/4

When hot magma rises towards the surface and cools, iron particles, inside the cooling rock, align themselves with the earth's polarity at the time of cooling. Due to magnetic reversals, that change the o...