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[Higher] Simplify the following expressions: x^7 X x ^5 and (x^-2)^-3

For the first part, when we are multiplying a number of two different powers (here being 7 and 5), we must add the powers in order to simplify the expression. So here x 7 * x 5 = x (7+5) = x 12 , which is th...
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Answered by Zak S. • Maths tutor
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[Foundation} y = 4x - 3t. x = 2 and t = 5. Work out the value of y.

We know y = 4x - 3t. We are given the values of x and t and we need to work out the value of y. So we shall substitute the given values of x and t to work out y. y = 4 X 2 - 3 X 5, and so using the laws of B...
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Answered by Zak S. • Maths tutor
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How does classical conditioning occur?

Classical conditioning occurs when a conditioned stimulus produces a conditioned response.First begin with an unconditioned stimulus which creates an unconditioned response. For example, food will automatica...
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Answered by Jamie D. • Psychology tutor
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How do you establish factual causation?

We establish factual causation using the 'but for' test. We have to be able to say that 'but for' the Defendant's actions, the victim would not have been injured. For example, in the case of Pagett, 'but for...
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Answered by Jamie D. • Law tutor
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Name 2 types of muscle fibre and provide 2 benefits of each. (4)

Fast twitch: ability to produce a large force, provide strength for sports like weightlifting.;Slow twitch: do not tire easily, ability to perform over a long period of time (e.g. a full match).
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