24) inequalities -2.5<x<4/3 (5 marks)

What was the question for 24. I know the first bit was 4x^2 -25 >0 but I can only remember a bit of the other one. I think it was -3x^2...<0

Reply 68

loiuy

Original post by A.23

My bad it's just cause I saw a lot of other people get 71 and someone shared their working too. Just wondering how you got 39?

Its 71, dont stress

Reply 69

username6170811

Can anyone explain the answers to questions 5 and 6?

Reply 70

megan_xay

Original post by loiuy

Its 71, dont stress

it's 64 i think, chord is perpendicular to the radius that bisects the chord, i've seen the way ppl are getting 71 and doesn't look right? doesn't this look more right to you?

besides it's an unofficial mark scheme meaning that the answers given could be wrong, we'll find out once the official mark scheme gets released

Reply 71

ah,privv

Original post by A.23

I'm just making an unofficial mark scheme for us to add too cause I haven't seen anyone else make one. We can discuss the answers in the chat below but I'm gonna add the answers that I've seen on other maths forums for now :smile:

1) division with decimals - 56.4 (3 marks)
2) fractions - 4 7/8 (3 marks)
3)125 surface area of cube is 150 cm2 find the volume (4 marks)
4) frequency polygon (2 marks)
5) pressure(cylinder) question- 3 (3 marks)
6) 20% holiday question - £1200 ( 2 marks)
7)the pentagon question -140degrees (3 marks)
8)
9)scatter graph
a) as age increases weight increases-its a positive correlation (1 mark)
b) 4 months (2 marks)
10) a)venn diagram (1 mark)
b)7/10 (2 marks)
11) simultaneous equations graph x=6 y=-2 (1 mark)
12) probability of losing = 62/72 = 31/36 ( 2 marks)
13) direct proportionality- y=80 (3 marks)
14) indices question
a) 4^-2 (2 marks)
b) this was 8^(5/3) - 9^(3/2) = 5 (2 marks)
15) 2 perpendicular line question k=3 (3 marks)
16)the sphere 10 square root 2 (4 marks)
17) make x the subject x= -3y-28/5y-8 (4 marks)
18) carrots -30p
Tomatoes -54p (4 marks)
19) dessert question - 7 (2 marks)
20) functions
a) (5x-2)^2 (2 marks)
b) 55 (3 marks)
21) circle theorem - 71° (4 marks)
22) plane/ cuboid question - 30 degrees (2 marks )
23) (10root3 + 27) / 39 (4 marks)
24) inequalities -2.5<x<4/3 (5 marks)

does anyone remember what question 8 was?

Reply 72

megan_xay

Original post by megan_xay

it's 64 i think, chord is perpendicular to the radius that bisects the chord, i've seen the way ppl are getting 71 and doesn't look right? doesn't this look more right to you?

besides it's an unofficial mark scheme meaning that the answers given could be wrong, we'll find out once the official mark scheme gets released

wait i don't think the working out showed lemme try again

circle theorem.png

Reply 73

megan_xay

Original post by megan_xay

wait i don't think the working out showed lemme try again

circle theorem.png

Reply 74

A01B

What’s answer for q 3??

Reply 75

sjhiolh

for question 16 how did you get 10 root 2

Reply 76

adkjgagadfas

question 3 was just 125 cm3
for the volume
becuase you do square root of 25 and then cube 5 to get 125

Reply 77

PRanger101

Original post by lukewilson_2006

for 11 b the answer was 5

well done, luke

Reply 78

ediztonkaelton

Original post by A.23

- some of the questions may be in the wrong order

1) division with decimals - 56.4 (3 marks)
2) fractions - 4 7/8 (3 marks)
3)125 surface area of cube is 150 cm2 find the volume (4 marks)
4) frequency polygon (2 marks)
5) pressure(cylinder) question- 3 (3 marks)
6) 20% holiday question - £1200 ( 2 marks)
7)the pentagon question -140degrees (3 marks)
8)
9)scatter graph
a) as age increases weight increases-its a positive correlation (1 mark)
b) 4 months (2 marks)
10) a)venn diagram (1 mark)
b)7/10 (2 marks)
11) simultaneous equations graph x=6 y=-2 (1 mark)
12) probability of losing = 62/72 = 31/36 ( 2 marks)
13) direct proportionality- y=80 (3 marks)
14) indices question
a) 4^-2 (2 marks)
b) this was 8^(5/3) - 9^(3/2) = 5 (2 marks)
15) 2 perpendicular line question k=3 (3 marks)
16)the sphere 10 square root 2 (4 marks)
17) make x the subject x= -3y-28/5y-8 (4 marks)
18) carrots -30p
Tomatoes -54p (4 marks)
19) dessert question - 7 (2 marks)
20) functions
a) (5x-2)^2 (2 marks)
b) 55 (3 marks)
21) circle theorem - 71° (4 marks)
22) plane/ cuboid question - 30 degrees (2 marks )
23) (10root3 + 27) / 39 (4 marks)
24) inequalities -2.5<x<4/3 (5 marks)

For 20 a) if i expanded the bracket at the end would i still get full marks or is it not fully simplified?