Welcome to 3minutemaths! This channel is all about GCSE maths revision, and focusses on the topics needed to pass GCSE maths, with all the main boards: Edexcel, OCR, AQA and Eduqas. I have worked as a maths tutor for over 20 years, both privately and within schools, tutoring a wide range of students on all areas of the curriculum - from foundation to higher level topics. The videos support my own worksheets, and are posted every Tuesday. They are all based on similar exam questions, and definitely proofread by my students! Please do let me know if there are any particular topics, either through the comments on the channel, or directly by visiting 3minutemaths.co.uk. Any thoughts, comments or ideas are very much appreciated. Please do subscribe, and I'll look forward to seeing you soon :-)
At 13:40 If we are dividing all terms by the HCF, in which cases we can drop the number that we have factored out? And which cases do we need to keep it in front a squared bracket? Since halving all terms will give us a different parabola, only the solutions crossing the x axis will be unchanged if I'm right. 🤔...
Mate, you have done really good job, i love your videos. Thanks for the help you provide to everybody in need. Just some quick tip for that one. Question 7: Y=100 : 12.5 and so Y=8 and then X=500 : 8 X=40 :) i guess you calculated in your mind and you got straight to the answer of X :)
Great instructional video! I was hoping you could help me with a problem I'm having. I would like to be able to construct a cone of any size/shape by drawing a circle and cutting one line of the sector from the outside to the center and then bringing the cut together with the other side of the sector to form a cone. Specifically, how can I determine the sector lines so that the base angle of the cone after it's constructed is any angle I choose? I want to make a cone with the same base angle (slope angle at the base) as the great pyramid which is 51.827293º. Thanks so much!!
Something to point out in case you wonder why the denominators just vanish into thin air after the cross multiplying ,it's all because you can just do a subsequent "multiplying" on both sides by the denominator(s) that is 6(x+1)(x+4).That cancels out the denominators entirely.And you are indeed allowed to do this because these are still fractions so the simpler the better.(and it's still mathematically solid and valid) This thing was only implied in the video so I wanted to point this out... Keep it up💯! 🙂
Hi just put this into the calculator as I tried doing a few more sums similar to this and checked it but the decimalplace was wrong on both of ours I'm wondering if you can explain this to me and where I'm going wrong as it came up with 26.6875 for your question and has come up with a different answer to my calculations on the decimalplace
Hi - there's quite a number of topics between now and year 11 so here's a few thoughts: - Always write the formula, as it'll help to focus you on the important parts of the question - Always show your working ... preferably working down the page - Learn to be methodical with algebra - it can get quite complex - Be careful with units cm, m, etc - make sure that they are the same, before any calculations - Work through additional materials during the week (I do!) All very best! S :-)
@@3minutemaths aww I’m just being honest, when I went back to school yesterday after being sick a while my teacher was so proud I managed to stay keeping up <33 ur video really helped me understand the topic!
