Qualification > Math
math specimen paper 4, help please !
emi:
please help some one ,, i just want the first page
pedrojosetrujillo:
Whatever u do, dont draw your graphs in pen. I knw its obvious, but once your in da exam u seem to forget as your so focused on solving da questions.
X Abdulrahman X:
--- Quote from: abdulrahman101 on May 16, 2009, 06:51:30 am ---
--- Quote from: emi on May 16, 2009, 04:27:52 am ---can any one solve Question 1 from SP 4 ? and tell me how you did it ? please
--- End quote ---
ok, 20,000,000 cm/ 100 (to get cm-m) ==== 200,000m
200,000 m/ 1000 (to get m-km) ===== 200km
200km x 12 = 2400km
OR 20,000,000 x 12 = 240,000,000
240,000,000 / 100 = 2,400,000
2,400,000 / 1000 = 2400km
Done 8)
--- End quote ---
lol sorry i forgot to finish the rest of it, anyway.
1 ii) 13x(20,000,000)^2 / 100,000^2 = 520,000km squared.
b i) 1580/31.6 = 1/n = 50, 50 x 100 x 1000 = 5,000,000 ( because answer needs to be in cm )
b ii) 1155 to 1403 = 128 minutes
S=D/T 1580/128 = 12.343...
12.343... x 60 = 741 km/h
NOW ITS DONE ;D
MB:
Hey, could someone please help me with number 8? : )
And how do you rotate about a centre, and how do you reflect about a line? :S
Thanks!
X Abdulrahman X:
--- Quote from: MB on May 16, 2009, 11:56:45 am ---Hey, could someone please help me with number 8? : )
And how do you rotate about a centre, and how do you reflect about a line? :S
Thanks!
--- End quote ---
8. a) 1.2 x 0.3 x 3 x 60 = 64.8
b) 1.2 x 0.8 x 15 x 60 = 864
864-64.8=799.2
799.2/ 64.8 = 1233%
c) (( (pie) x r^2 x h )) - (( (pie) x r^2 x (h-0.0013) = 2 )) {0.0013 = metres}
cancel out to get, (pie) r^2 x 0.0013 = 2
make R the subject, 2/0.0013 x (pie) = something and square root it to get 22.13m
d) 50.40 / 0.12 = 420m^2 - surface area,
420 = 0.8x +1.2x + 0.8x = 420= 2.8x x = 150m
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version