Recent content by paulb203

Ah, thanks :)

Sorry if 'Profile Badge' is not the correct term. I have an MS 365 subscription and I've noticed on my Word documents the small circle with my initials in it is sometimes different in colour document to document (it's the circle at the top right of the doc, that, when you hover over it it tells...

Yes, that's the one. And thanks, I'll check out Cognito.

TL;DR Summary: Videos but no worksheets. I see Maths Genie have their new A Level page up, with a video for each topic. But no worksheets. Does anyone know if there will be worksheets added later?

Ah, I see what you mean. Yeah.

Maths Genie https://www.mathsgenie.co.uk/resources/1hnov2017B.pdf Q.22

Thanks a lot guys. I got there in the end, thanks to all of you, and a bit of extra help from Maths is Fun. (Flip AEB on its head, as it were, to put E at the top, with A still at the bottom left, etc. Other value of x = 14.5) I found this one very tough, but then it was Higher tier (GCSE...

Thanks, Steve. I'll give this a go after I've revisited the very basics; I fear I've got myself in a right muddle :)

Thanks. I thought they had to be parallel in order for the triangles to be similar (?).

Thanks. Can similar shapes be equal in side lengths and angles; basically the same , except for how they are positioned?

Back to basics. Are the two triangles they are referring to as follows; ABE, the small triangle, bottom left? And, ACD, the large triangle, which is the whole picture, and incorporates ABE? Is AED, the base of the large triangle, 15cm (12+3)? Is AE, the base of the small triangle 12/15ths of...

Thanks, guys. Loads for me to think about; I'll get back to this shortly. For now; yes, by (SF) I mean Scale Factor. Sorry about that.

Thanks. I wasn't until now, as I didn't think it was relevant, but you've got me thinking about it. My guess is the relationship is always the same; the side of the small triangle * SF = side of the large triangle?

Why are there two possible values of x? Here's what I've done so far. AE(SF)=AD 12(SF)=15 SF=15/12 =5/4 AB(SF)=AC 8(5/4)=AC AC=10 AC-AB=x x=10-8 x=2 A hint please, as to my next step

I’m working my way through Khan Academy’s High School Physics and I want to check that I’m getting the concept of conservation of energy. Is the following at least roughly correct? When a ball is rolled down a U-shaped ramp from the top of one side it will, ignoring friction, travel to the...