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p and q are two numbers each greater than zero. √(p^2 + 5q) = 8 and √(p^2 – 3q) = 6. Find the values of p and q.

First of all, we have to raise to the power of two the first equation and will obtain: p^2 + 5q = 64. We have to proceed the same for the second equation and will obtain: p^2 - 3q = 36. Second step is to sub...
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What is the key to doing well in longer answers?

The key to GCSE History exam long questions is key factual detail. It is imperative that you know precise factual detail to back up every point. This means dates, facts and relevant key factual information t...
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Answered by Grace T. • History tutor
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What is the difference between definite and indefinite articles?

Definite articles are used when we talk about something specific. There are four definite articles: La (femenine, singular), Las (femenine, plural), El (masculine, singular), Los (masculine, plural). For exa...
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Answered by Dominika K. • Spanish tutor
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Find the highest common factor (HCF) of 12 and 18.

We start off by drawing attention to the first number in the question, 12. The number can be broken down into multiples by dividing it by the lowest number (that isn't 1): This breakdown is as follows: 12=2*...
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Answered by Jake J. • Maths tutor
38669 Views

Give an example of a strong acid.

Hydrochloric acid is an example of a strong acid because it is completely ionised in water.
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Answered by Maria K. • Chemistry tutor
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