Another maths question!

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https://imgur.com/DyUEeyj



Go on, do your worst

 

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The correct answer is -3, thanks guys. I had 3 but couldn't for the life of me figure out what the hell I was doing wrong

you're supposed to do your own homework!

Bugger off you

 

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Right, here's another one!

My answer:

Spoiler

a) 24.693m/s.

b) To calculate this, I first calculated the total distance travelled by multiplying the speed by the time travelled, ie. (58mph x 2.25h = 130.5miles) and (46mph x 1.75h = 80.5miles). I then added the two together to get 211 miles. By then adding the times together (2.25h + 1.75h) and then dividing the total distance travelled (211miles) by the time (4 hours) I came to the conclusion of 52.75mph. This converted to SI units is 24.693m/s.

My only question is whether I should've converted to SI units before doing the calculations, but then I feel like I'm overthinking this a bit too much

 

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I agree 52.75mph, but how are you converting that to 24.693m/s?

52.75 / 3600 x 1609 = 23.576m/s

The units given to me by the textbook are slightly different to what's accepted, so I'm more inclined to use those.

 

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Do we all get a share in your A-level for helping you with your coursework?

Absolutely! I'm sure we can all fit the hat at the same time!

//For the record, I do seem to be struggling a bit with basic maths which is driving me up the wall because I it was always one of my strongest subjects at school (maybe all those years living in Amsterdam took their toll!). This is part of my engineering degree which I'm doing and even though this is basic stuff to most, just chatting on here with you guys is really helping the pennies drop, seems I overthink even the most basic things to the extreme (that last question? I literally had three pages of A4 doodles trying to figure it out, when in reality it's three lines of numbers to calculate it).

I might get some private tuition for a bit just to catch up on things, given that engineering is so maths orientated.


As silly as it might seem, this thread is really helping, so thanks for that

 

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Hope you don't have to do volume integrals in your degree!

It's fluid dynamics I'm dreading the most

 

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I suspect the last one will reflect me the most

 

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Curious what you guys think of this one:

The maths behind it seem fairly straightforward, but the thing that's getting me is that fact that the student failed one of her ICMAs and from what I can tell, there is no way to see how this affects the score. Am I being a dumbass again?

 

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Presumably the part which says the overall score is based only on the marks you gain on your TMAs. So as long as they pass the required number of iCMAs it's academic. I'm also inclined to agree with dowie (there's a first!) that soon you must leave the nest.

Oh make no mistake I'm learning a hell of a lot, and dowie does have a point, I'm just using GD as my study group issall

The question is obviously more aimed at reading comprehension as the answer to my question is in the very next line of text! Facepalm.jpg