Material created by students working with the School of Mathematics, Statistics & Physics E-Learning Unit at Newcastle University over the summer of 2017, to support students making the transition from school to university.

## Project activity

#### Christian Lawson-Perfect on Find and use the formula for a geometric sequence 1 week, 3 days ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect on Find and use the formula for a geometric sequence 1 week, 3 days ago

Saved a checkpoint:

Looks like there was an off-by-one error.

#### Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 1 week, 3 days ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 1 week, 3 days ago

Saved a checkpoint:

You're right! I've fixed it, and improved the TeX. Worried that I let that slip by!

#### Deirdre Casey on Find and use the formula for a geometric sequence 2 weeks, 4 days ago

In part b does not accept correct answer. Mistake also shown in the solutions.

#### Deirdre Casey on Find and use the formula for a geometric sequence 2 weeks, 4 days ago

Gave some feedback: Has some problems

#### Deirdre Casey on Solving linear simultaneous equations by elimination 3 weeks ago

Gave some feedback: Has some problems

#### Deirdre Casey on Solving linear simultaneous equations by elimination 3 weeks ago

I think there is a sign error in the second equation in part b.

#### Christian Lawson-Perfect on Substitute values into formulas 1 month, 1 week ago

Saved a checkpoint:

I've changed the definition of x2 to make sure the sales are always non-negative.

#### Christian Lawson-Perfect on Expand brackets and collect like terms 1 month, 1 week ago

Saved a checkpoint:

I've fixed part h - I was missing a plus-or-minus in the matching pattern.

#### J. Richard Snape on Substitute values into formulas 1 month, 2 weeks ago

Part (b) uses the random variable n={0..4}, but that can give negative sales in a year which doesn't make much sense. I think that the variable definition has been copied over from a different word type question and should actually be allowed to run {2..5}

#### J. Richard Snape on Expand brackets and collect like terms 1 month, 2 weeks ago

Thanks for this fantastic question set in "Transition to University". I'm trialling using them in my teaching this year. I have a tiny problem with part h in this question - for some reason when I use it when a student enters a correct answer it marks it wrong, giving feedback that it can be further simplified. I attach a screenshot - not sure what rule is triggering this as even the 419 constant is prime, so I can't see any further gathering of terms possible. I'll try to debug myself, but any help would be appreciated :) It seems to be using "all" for simplification in the marking, but so are other parts in this question that work fine.

#### Chanselvie Dimuene on Percentages and ratios - box of chocolates 2 months, 2 weeks ago

Gave some feedback: Ready to use

#### Christopher Graham on Calculate the measures of central tendency for a sample 3 months, 1 week ago

Moved the list of answers into a table, to make the formatting more consistent with similar questions.

#### Christian Lawson-Perfect published Consumer mathematics 3 months, 1 week ago

#### Christian Lawson-Perfect on Consumer mathematics 3 months, 1 week ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect created Consumer mathematics 3 months, 1 week ago

#### Christian Lawson-Perfect published Probability 3 months, 1 week ago

#### Christian Lawson-Perfect on Probability 3 months, 1 week ago

Gave some feedback: Ready to use