I wrote the answers to all my questions on the exam so i could take them out and my teacher could mark them. some of them I got wrong, my teacher said I got about 95/100 so I tried to remember the actual answers to the ones I got wrong.
I only wrote the final answers, not the working out. Also, I haven't included the drawings and graphs.
Q23.
A)806.25
B) ii] 302
iii] No, 180.33333 is not a whole number.
C) (I made a silly mistake in looking at the wrong column [my answer was 8860] and lost 1 mark, but from memory I think the answer was 6600, but not sure)
D) i] 10m cubed
ii] 633cm
Q24.
A) i] 900mm
ii] 2000 x 2000
iii] 9695
iv] 1815 (You had to work out the scale of 1mm and then measure the windows with a ruler)
B) i] 10
ii] 8/72
iii] 5
C)i] 55 degrees
ii] 13km
iii] I made a mistake in "Cii" by putting down 14km instead of 13km so I got 249 degrees for this question. I think my teacher got 230 or something, but I can't remember sorry.
Q25.
A) i] catagorical
ii] I said: "The number of text messages sent per day" but anything that involves numbers would do.
iii] I said: "Pick 1 person from each year group in every school in NSW" and my teacher said that was correct.
iv] all high school students in NSW
B)i] year 12 with 100%
ii]year 10
iii] as the year group age increases so does the percentage of students with phones.
C) i] 580
ii] 172/319
iii] 42%
D) i] Male 71
ii] 9
Q26.
A) i] 5
ii] 1/2
iii] 2/3
iv] lose $1.50
B)i] 3645
ii]8
C) $552.50
Q27.
B) I got both of these wrong because I didn't read the question properly, there might be other people on the forums that will let you know the answers for these.
i] 30km
ii] i said 4 S 208 W
C) i] -2
ii] both -2
D)Joe had the best with $69,827.91... Emma had $55409.36
Q28.
A) i] p = a/v
ii] (Equation was P = 6/v) P = 1.5
B) i] -4000
ii] show the depreciation each year
iii] y= -4000x + 60000
iv] values less than 0, values greater than 15.
v] 2638.83
vi] Her salvage value gets lower and lower and closer and closer to 0 but never reaches 0.
Hope this helped, good luck with the rest of your exams!