UPDATE: Looking for the solutions to the 2020 HSC Mathematics Standard 2? Check here.

It can take some time for the official solutions to be published by NESA, so I’ve sat down and worked out the answers to the entire paper for you!

NEW – Video guide to the solutions:

Written guide to the solutions:

Click below to download the PDF (file size approximately 7.5 MB):

It was interested to work through this paper since it was the very first HSC on the new Standard 2 syllabus. Overall I’d say that the test wasn’t too difficult. I was a little worried not knowing how this first exam was going to be, but there were a lot of questions were relatively easy and straight-forward.

There were also a few questions at the end where students who really knew what they were doing could shine. The questions that could trip a lot of people up and were testing whether you know your stuff started around Question 31, but really stepped up at about Question 35.

Please keep in mind that while I’ve been careful and double checked my working, there could be mistakes, so if you find any, just let me know! Any corrections will be noted below.

Corrections to the written guide:

- Question 9 previously showed answer as B due to not writing
*x*in months. The correct answer is A. (Don’t read questions too fast haha!) Thanks to Jason for catching this error!

## 2 thoughts on “2019 HSC Mathematics Standard 2 Unofficial Solutions”

Hello, just letting you know that you made a mistake on Q18b. The total runs for the team was meant to include the 95 runs from Andrew, Brandon and Cosmo.. Correct answer should be 275 runs

Thanks for letting me know, but I believe the answer of 180 is correct. Although, it’s just a small detail in the wording of the question. The prompt says that the ratio of Andrew, Brandon, and Cosmo’s runs to the

wholeteam (not the rest of the team) is 19:36. So that means that when we create the equivalent ratio 95:180, the 180 does represent thewholeteam, including Andrew, Brandon, and Cosmo. Ratios can be parts to parts or, as in the case, parts to total. If the prompt had said it was the ratio of the three’s runs to the rest of the team, then you would be correct and we’d have to add the 95 to the 180.I hope that makes sense! If you disagree with my explanation, though, let me know! Again, thanks for commenting, because it’s a small detail like that anyone could miss, including me if I’m not being careful!