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    Tbh I loved this paper. Just lost mark for stupid mistakes
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    (Original post by Purpleunicorn197)
    Hi I'm going to start and unofficial markscheme so add your answers
    Reps are not necessary but would be appreciated

    Sorry for the hold up with the questions
    1. Order numbers correctly and include a key (Stem and leaf) (3 marks)
    b) 9/20=
    0.45 (2 marks)
    2a. 5a*2b*3c =
    30abc (1 mark)
    b. Factorise fully 3y +6 =
    3(y+2) (1 mark)
    c. Expand x(x-3)=
    x^2-3x (1 mark)
    3. Perimeter of a rectangle with side lengths x and x+4 is 45
    x+x+x+4+x+4= 4x+8
    4x+8=45
    4x=37
    x=9.25 (3 marks)
    4. Smallest packet was best value for money because it was cheapest per bag of crisps (4 marks)
    5. 4 times as many red than green: There were 0.4 blue and 0.15 yellow.
    0.4+0.15+4x+x=1
    0.55+5x=1
    5x=0.45
    x=0.09
    4x=0.36
    Green- 0.09 Red- 0.36 (3 marks)
    6a. Body mass index= m/h^2
    Mass= 50kg
    Height= 1.57m
    20.3 (2 marks)
    b. What mass will result in a BMI of 21 with a height of 1.8m
    68.04kg (2 marks)
    c. Tom's skis can be a maximum of 145% of his height what is their max. tenght (Tom is 1.8m)
    2.61m (3 marks)
    7. Trial and error. x^3-5x=34 with a number between 3 and 4
    3.8 (4 marks)
    8a. Photographs with of width 720 pixels and a height of 540 pixels what is the ratio width:height in its simplest form?
    4:3 (2 marks)
    b. The person now wants the ratio to be 2:3, without changing the width of the picture, what is the new height?
    480 pixels (2 marks)
    9.x= 124 degrees (4 marks)
    10. Mean of grouper freq. table 396(freq.*midpoint total)/50 (freq. total)
    7.92 (4 marks)
    11. Colin's drive to work
    £42.29 (5 marks)
    12. The middle angle of a pentagon
    x=144 degrees (4 marks)
    13.
    -2 -1 0 1 2
    -1 3 1 -1 3 (2 marks)
    Draw curve (2 marks)
    14. steel bar with length of 120cm and a cross sectional area of 72cm^2 and a density of 8g/cm^3. A trolley can carry 250kg so how many bars can it carry?
    3 Bars (5 marks)
    15. Pauls buys a car worth 15,000 pounds and the value depreciates by 23% in the first year and 18% after the first year. Has Paul's car lost half of its value in theree years?
    No, because 7766.22 was greater than 7500 pounds (4 marks)
    16. Median on cumulative freq. graph
    128g (1 mark)
    b. Use graph to find interquartile range
    11g (2 marks)
    17. Triangle with sides 15.6cm (opp), 18(hyp). Angle is split into 2, 30 degrees and x degrees. the whole angle is 60.1 so
    x=30.1 (4 marks)
    18. 10a^5b^4 (2 marks)
    b. y= 5p^2-x (3 marks)
    19. 51 out of the 234 were maths in yr 12 so 50 * 51/234
    11 males (2 marks)
    20. 3x^2 + 6x -2
    x= 0.29 or x= -2.29 (3 marks)
    21. v=14 to 2 s.f u= 8.7 to 2 s.f
    What is the upper bound of I when I= 5(v-u)
    29.25 (3 marks)
    22. Histogram -F.d- 1.6, 3.2, 2.4, 1.8, 0.3 (3 marks)
    23. Perimeter of the shaded part of the sector.
    Measurements were 4+4+5/2pi+25/6pi
    28.9 (3 marks)
    24a. Simplify (3-x)/3x^2-5x-12
    -1/3x+4 (2 marks)
    b. Write are one fraction in its simplest for (x/x-1)- (x/x+1)
    2x/(x+1)(x-1) (3 marks)
    25. Triangle with side lengths 7 and 8 finding the top angle using 1/2absinC , sine rule and cosine rule
    80.4 (6 marks)
    looking through this mark scheme i think i would be able to get around 55 marks which 100% secured my B grade in Maths
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    (Original post by aw30)
    looking through this mark scheme i think i would be able to get around 55 marks which 100% secured my B grade in Maths
    Not bad. I got between 88 and 93 percent.
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    (Original post by Rxkaa)
    Yes as 45%=0.45=9/20


    Posted from TSR Mobile
    chill ,cheers
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    the area of a triangle is 1/2 x a x b x sin(c). so you rearrange it to find sin(c) and then inverse sine it to find the angle on the left. then you i used the cosine rule to find out the length of the side opposite to the angle you just worked out (the right hand side length). then i used sine rule and got 80.4 degrees.
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    I had a bloody stomach ache in this exam. I couldn't think properly, it was so annoying. I managed to finish the paper which i am soooooo happy about but i swear im going to make my stomach regret what torture it put me through today
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    https://www.youtube.com/watch?v=ahe6...ature=youtu.be
    answers
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    Hey so it looks like I got around 132/135 in both papers, what grade am I looking at? I'm hoping for an A because my mums been pressuring me but I'm not sure because everyone is saying that they found it easy so I'm not sure how high the grade boundaries will be.. Any ideas?
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    (Original post by Nightly)
    Not bad. I got between 88 and 93 percent.
    what do you think an A will be this year overall i think i got 130-133/200????
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    On Q17, i used sine rule in the triangle to find an angle. However, i didn't know about the ambiguous value for the sine rule and used the wrong form of the answer. Would i get 0marks eventhough i got all the methods right, just not the angle?
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    The answer you got for question 11 is wrong because you didn't add the £17.5 that he has to pay for the car park. This means tha the right answer for question 11 is £17.5+£42.29= £59.79
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    (Original post by Rajive)
    I got 40.0?
    Yeah I got 40.1
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    (Original post by mathsmaths321)
    The answer you got for question 11 is wrong because you didn't add the £17.5 that he has to pay for the car park. This means tha the right answer for question 11 is £17.5+£42.29= £59.79
    I think you added the parking twice dude
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    Do you have the working solution for question 11
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    (Original post by ocj28)
    what do you think an A will be this year overall i think i got 130-133/200????
    thats probably a B - an A will be about 140-145
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    (Original post by krystal16)
    On Q17, i used sine rule in the triangle to find an angle. However, i didn't know about the ambiguous value for the sine rule and used the wrong form of the answer. Would i get 0marks eventhough i got all the methods right, just not the angle?
    You'd probably get 2 marks if you got the method right☺️
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    (Original post by FinleyBarry)
    thats probably a B - an A will be about 140-145
    but it was 125 for an A last year though it shouldn't increase that much
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    (Original post by FinleyBarry)
    thats probably a B - an A will be about 140-145
    God I doubt they'll be that high, a lot of people I know don't think they managed to even get a C
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    (Original post by zeldor711)
    I got 80.1? You're probably right. Did you get the other angle as 40 and side as 5.22?
    I got 80.1!!!
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    Got everything there but put 30 instead of 30.1, forgot the half in 1/2absinc for the last question and got 1/3x+4 instead of -1/3x+4. Still kicking myself. HOW DO YOU FORGET HALF, IT IS A TRIANGLE. :'( But I should get above 95 due to ecf.
 
 
 
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