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How can I achieve a grade A?

It is absolutely vital that examples are incorporated in the argument of your essay. For every point that is made, an example should be given as it demonstrates your understanding of a political concept. The...
RR
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Explain what an eco town is, including an example

Ecotown's are a government scheme initiated in 2007, with the plan to build 10 eco towns by 2020. Their role is to ease the adorability crisis and develop more places to live that are eco-friendly, whilst al...
ML
Answered by Molly L. • Geography tutor
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Was machst du gerne in deiner Freizeit?

In meiner Freizeit spiele ich gerne Fußball. Am Wochenende spielt mein Verein oft gegen andere Vereine in Punktspielen. Manchmal schaue ich, nachdem ich meine Hausaufgaben gemacht habe, Fernsehen. Wenn meine...
AM
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p(x)=2x^3 + 7x^2 + 2x - 3. (a) Use the factor theorem to prove that x + 3 is a factor of p(x). (b) Simplify the expression (2x^3 + 7x^2 + 2x - 3)/(4x^2-1), x!= +- 0.5

(a) The factor theorem states that: the polynomial f(x) has a factor (x - a) if and only if f(a) = 0.Use that information, we know that (x + 3) is a factor of p(x) if p(-3) = 0. So let's test it:p(-3) = 2(-3...
JM
Answered by James M. • Maths tutor
11359 Views

There are a collection of CDs. There are 2 Rock CDs, x Pop CDs and 2x + 5 Jazz CDs. A CD is chosen at random, the probability that it is Rock is 1/20. Work out the probability it is Jazz.

To answer this question first we need to work out how many CDs we have in total. We do this by adding up the number of CDs in each category:Total = 2 + x + 2x + 5. We can simplify this to give:Total = 3x + 7...
JM
Answered by James M. • Maths tutor
9069 Views