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Asked by : Jasper
Views 26
mrschoo
September 13, 2017 15:49 PM
Using similar triangles h/ 6 = 1/2 h = 3
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Asked by : jing-rou.keyzonz
Views 30
Asked by : Amandalum
Views 66
iindra001
August 6, 2017 19:24 PM
Comments (2)
  • iindra001 1 month 2 weeks ago.
    Draw imaginary lines from the center of circle
  • Bai Lijun 1 month 2 weeks ago.
    Your solution is incorrect.
Bai Lijun
August 7, 2017 13:14 PM
You can let me know if you have further questions.
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Asked by : Jerold.s
Views 80
Jerlynn
May 6, 2017 13:42 PM
Since BC is twice as long as PB, and QR=PC=36cm, Therefore, (a) PB= 36/3=12cm Angle PRC (y) = 90 degrees - 58 degrees = 32 degrees Angle ACD (x) = 45 degrees (Half of a right angle) Therefore the sum of angle x and y will be: (b) 32 degrees + 45 degrees = 77 degrees
Comments (1)
  • Jerold.s 4 months 2 weeks ago.
    Thank you Jerlynn.
sabita
July 6, 2017 15:24 PM
(a) PB+BC=36 2PB=BC hence 3PB=36 or PB=12 (b) y=90-58=32 x=90-45=45 x+y=32+45=77 degrees
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Asked by : alextay
Views 52
sabita
June 30, 2017 12:08 PM
13 (a) A:B:C=2:3:5 (i) C's share is (3/2)*12.40$=18.60$ (ii) Sum total=(2+3+5)* 12.40/2=62$ (b) ratio of length-x:y total length of rope-p length of rope xp/(x+y), yp/(x+y) Difference in rope length=(x-y)p/(x+y)
Comments (1)
  • alextay 2 months 3 weeks ago.
    Thks Sabita.
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Asked by : eugene_loh
Views 44
Sheen Tian
May 17, 2017 15:48 PM
Comments (1)
  • eugene_loh 4 months 1 week ago.
    Tk you Sheen for your kind assistance. Was notified by email of your reply.
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Asked by : chris_p
Views 58
eugene_loh
April 12, 2017 21:01 PM
(4) Heat from spoon gets transferred to the icy cold drink, temp. of spoon will drop
avin
September 2, 2017 03:33 AM
The fourth answer is the correct option. But, what is the physics behind this - we know ice have a temperature 0 degree and the spoon other end in surrounding ( air). The spoon other end have a higher temperature.we know from physics that energy always flow from higher temperature to lower temperature. Thus,the icy cold drink gains heat from the spoon.
Comments (1)
  • chris_p 2 weeks 4 days ago.
    Thanks Avin! Appreciate the help rendered!
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