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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Thank you I don't know how to do part a). Answers say AAS and the first part of part b), the show bit. Thanks.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Could someone please help with the question posted on top of this page. Cheers.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Dont know how to answer part d) Trying to show there is one pair of parallel lines i.e. DC parallel to AB Answers says cointerior angles are supplementary.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Dont get how to show part d) AB is perpendicular to OP I know AM = BM from matching sides in congruent triangles Answers says just says matching sides and angles , triangle AMO congruent to triangle BMO But does that mean...
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Stuck on part d) Answers say equal alternate angles. But I don't see how to show that. Probably something to do with the isosceles triangles established earlier.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread That is what I did, but then if you do alternate angles on parallel lines for alpha and beta, doesn't that assume the lines are AB and D extended to C and EF and DC are parallel??
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Unsure how to answer this question without first using the fact that they are parallel lines and so to find angles that then prove they are parallel lines.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread how do you show x = 24 for part a) ??
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Is it something to do with the limiting sum of a GP?? Also I don't get how to answer part a)
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread No
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Two bulldozers are sitting in a construction site facing each other. Bulldozer A is at x = 0, and bulldozer B is 36 metres away at x = 36. A bee is sitting on the scoop at the very front of bulldozer A. At 7:00am the workers...
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread The answer is 1/2^(1/4)
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Unsure how to answer part a). I get part b).
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Don't understand what the question is asking me. Answers says 4 units
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Stuck on part c). Not sure how to use part a) to help.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread I found the general formula Then found T14 and T15 Then made T14/T15 > 1 I then simplified and got sinOcos^9O > 6/15 where O is theta However I think this is wrong and I don't know where I have gone wrong. Answers...
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Not sure how to begin this question. I tried finding the general form for the binomial expansion. Is that correct to do? But I am having some difficuties collecting x terms.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Unsure how to do part b). I get the answer 13/6 but the answer is n = 7
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Stuck on part ii) I found T2 when y = 0 t2 = 2Usin(alpha) / g Now not sure how to get the RHS eqn.
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    Cambridge Prelim MX1 Textbook Marathon/Q&A

    Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Is it right for part b) to plug The new velocity and angle into part a max height and then equate it with part a) ?
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