Sec 3 Na Math

• ^tamago^

  7 Sep 07, 16:29

  Originally posted by ndmmxiaomayi:

  My careless mistake!

  It's okie. Humans are not perfect.
• FaTal.ZenGetSu

  9 Sep 07, 03:17

  Can i know how much does a set of test paper from different school cost? Where do i get those test paper?
• FaTal.ZenGetSu

  9 Sep 07, 03:18

  It is a set where got at least 10 school of test paper
• eagle

  9 Sep 07, 03:18

  Originally posted by FaTal.ZenGetSu:

  Can i know how much does a set of test paper from different school cost? Where do i get those test paper?

  for maths I think around $50
  
  I only know 2 places.... Clementi Central, near NTUC there
  or Heartland mall, near Mavis Tutorial Centre there
• ndmmxiaomayi

  9 Sep 07, 03:41

  Around neighbourhoods...
  
  Popular bookshops got sell some popular schools exams...
• FaTal.ZenGetSu

  20 Sep 07, 21:56

  is there any website to do Sec 3 Na Math question. better is exam question
• FaTal.ZenGetSu

  10 Oct 07, 19:50

  wad do u mean by "mean",mode and median?
  
  No of cars,0, 1 , 2 , 3 , 4
  no of boys,3, 5, 4 , 2 , 1
  
  (a)Find the mean number of toy cars reveived
  (b)Find the mode of toy cars reveived
  (c)Find the median.
• Darkness_hacker99

  10 Oct 07, 19:54

  Originally posted by FaTal.ZenGetSu:

  wad do u mean by "mean",mode and median?
  
  No of cars,0, 1 , 2 , 3 , 4
  no of boys,3, 5, 4 , 2 , 1
  
  (a)Find the mean number of toy cars reveived
  (b)Find the mode of toy cars reveived
  (c)Find the median.

  Mean =Average of.
  
  Median = The middle number.
  
  Mode = The number occurring the most no of times.
• FaTal.ZenGetSu

  10 Oct 07, 19:56

  so answer is?
• ndmmxiaomayi

  10 Oct 07, 19:58

  Originally posted by FaTal.ZenGetSu:

  so answer is?

  Mean = sum/total number of items
  
  Mode - go and count
  
  Median - same as mode.
• HyuugaNeji

  10 Oct 07, 20:06

  Originally posted by ndmmxiaomayi:

  Mean = sum/total number of items

  mean's description is wrong. It is not just the sum but the average
• ndmmxiaomayi

  10 Oct 07, 20:08

  Deleted.
• FaTal.ZenGetSu

  10 Oct 07, 20:42

  A Honda car travels 374 km along an expressway in Malaysia in 4 hr 24min.
  
  (a) Express 4hr 24mins in hours.
  (B) Find the car's average speed in
  (i) kilometers per hour
  (ii) metres per second
  
  give mi the working and answer
• ndmmxiaomayi

  10 Oct 07, 21:56

  Originally posted by HyuugaNeji:

  mean's description is wrong. It is not just the sum but the average

  ???
• ndmmxiaomayi

  10 Oct 07, 22:05

  Originally posted by FaTal.ZenGetSu:

  A Honda car travels 374 km along an expressway in Malaysia in 4 hr 24min.
  
  (a) Express 4hr 24mins in hours.
  (B) Find the car's average speed in
  (i) kilometers per hour
  (ii) metres per second
  
  give mi the working and answer

  a) Seriously you don't know?
  
  1 hr = 60 mins
  4 hr = 60 X 4
  = 240 mins
  
  4 hr 24 min = 240 mins + 24 mins
  = 264 mins
  
  bi) Average speed = distance/time
  = 374/4 hr 24 min
  = 85km/h
  
  bii) 1km = 1000m
  374km = 1000 X 374
  = 374000m
  1 hr = 3600 secs
  4 hr 24 mins = 3600 X 4 + 24 X 60
  = 14400 + 1440
  = 15840 secs
  
  Speed = distance/time
  = 374000/15840
  = 23.6 m/s (3 significant figures)