It's difficult to know as it depends on the marks scheme and how far 'off' your sketched graph is, but your best bet for some marks would be on the *correct* drawing of the line `y`=2 in 3(c) and the line in 3(e)(i) and, perhaps, your clear workings for the gradient in 3(d).

*points below*

]]>Really depends on the mark scheme but there could be a slight chance of leniency since Q5(b)(ii) carries 3 marks, *provided* you show all your substitutions of `y` & `x` clearly.

Q7(b)(ii): As mentioned in the past, ecf will ultimately depend on the mark scheme but *at least* this part contains 2 marks so you can only hope.

Q6(b): This has been debated to the death in the past (notice Miss Loi was a lot more *cheong hei* back then :P). In a nutshell, 3sf only applies when the degree of accuracy is not specified and the **answer is not exact** (see instructions on cover page).

As the mass of the completed ramp ended up with an exact number (with 3 dp) computed from exact numbers in every step of the workings, *strictly speaking*, you are effectively decreasing the accuracy of the final answer if you approximated it to 3sf.

But then again, it all depends on how strict the mark scheme is this and Miss Loi has seen many got away with this.

Q10(b)(i): Fractions in simplest form are only explicitly required in Q10(b)(ii). It's just Miss Loi's style to leave it this way in general to facilitate quick checking of all branches in a probability tree diagram ðŸ™‚

]]>Would appreciate your reply . Thank you ! ðŸ™‚ ]]>

B)part 2 i continued doing and got different answers. Plz help ]]>