Qualification > Math
IGCSE MATHS Doubts
-Cornea:
for 5 measure the length of tht sky tower it's not written not to scale so u can use the image:D
0.5--->33
7.2--x
Malak:
--- Quote from: princess12 on May 10, 2010, 10:33:22 am ---can any one explain me 2,4,5 in oct 2006 please ??? ??? ???
--- End quote ---
Q2: 12 + 15 = x
------- ---
18 2
27 = x
---- ---
18 2
x= 2(3/2)
x= 6/2
x= 3
B-ii
5 Y 40
-- * -- = ---
3 3 9
5y 40
-- = --
9 9
45y = 360
y = 8
^^ Princess....I guess u did some mistake with multiplying :P 9(5) = 45 :)
Malak:
Q4: First u hav to convert 8 hours into minutes as in quetion it is to nearest (10) minutes
so
8 * 60 = 480
Now find the upper and lower bond
Upper: 475
Lower 485
She sleeps 30 nights so
475 * 30 = 14250 And thn divide by 60 to convert into hours = 237.5
485 * 30 = 14550 divide by 60 again = 242.5
237.5 < T < 242.5
-
PeaceMaker:
--- Quote from: PeaceMaker on May 10, 2010, 10:34:26 am ---Does anyone have a brief summary or notes of the angles and shapes?I mostly get confused with these questions so if anyone has notes or could explain to me briefly, i would be really greatfull.
--- End quote ---
Also, for the lower and upper bounds. :D
astarmathsandphysics:
Like this?
http://www.astarmathsandphysics.com/o_level_maths_notes/o_level_maths_notes_angles_in_polygons.html
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