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A hypothesis is a statement about the relationship between two variables (usually, the IV and the DV). The statement must usually also be operationalised or 'testable', which is another way of saying made...

First, we need to find the value of x. The perimeter of a shape is the sum of the length of all of its sides, so the perimeter of this isosceles is x + 4 + 2(x + 3) = x + 4 + 2x + 6 = 3x +10. We are told ...

To differentiate y with respect to x, you have to multiply each x term by their respective power and then decrease their power by one. For example, 4x² differentiated is 2 x 4x^2-1 = ...

The 1st ionisation energy is defined as the energy required to remove the outermost electron from one mole of gaseous atoms, forming one mole of gaseous 1+ ions. Moving from left to right the proton numb...

Sexual reproduction has many evolutionary advantages. These include: (1) a genetic variation in offspring that is not seen with asexual reproduction. (2) The variation allows the species<...