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The circle c has equation x^2+y^2 = 1 . The line l has gradient 3 and intercepts the y axis at the point (0, 1). c and l intersect at two points. Find the co-ordinates of these points.

When approaching intersection problems, it is important to have both equations and solve them by substituting one into the other or simultaneously. First we need to find the equation of the line l since we a...
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Answered by Ellen T. • Maths tutor
4297 Views

How can I improve my understanding of spoken French?

If you're planning on spending some time in France - and with the French, understanding spoken French is essential. Thankfully, there are not nearly as many accents in France as there are in the English-Spea...
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Answered by Agathe D. • French tutor
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Susan is researching the population growth of a city. She proposes that x, the number of people in the city, t years after 2017 is given by x=250,000e^(0.012t) A.population in 2017 B.population in 2020 C.During which year would the population have doubled

A. t=0 ; x=250,000 B. 2020, so t=3. plug in to equation > x=250,000e^(0.012)3 = 259,163 (people so cannot round up) C. Population to double so 500,000 = 250,000e^(0.012)t -> 1/0.012(ln2) = t t= 57.7 ye...
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Answered by James G. • Maths tutor
4785 Views

How would I analyse an unseen poem in an exam?

What is the poem actually about? - what is the subject/content? - first impressions/surface-level ideas - then second thoughts/ is there a subtext? Is the poem what you initially thought it was about? Is the...
EG
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How do you change nouns from singular to plural?

To start with, we're going to need to change the original 'le/la/un/une' (the article) to 'les' or 'des', and these apply whether the noun is masculine or feminine - we'd use 'les' if we want to say 'the', a...
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Answered by Nicola M. • French tutor
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