Mathematics: Post your doubts here!

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slayer

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bluefa1con said:
q19.jpg
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What do they actually want on b) ?
 
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bluefa1con

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slayer said:
What do they actually want on b) ?
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since you found the range of values for x in part a
they want you to list those values in part b
i just gave the working to justify my answer you can just write the answer
positive integers less than 4.33
1, 2, 3, 4
 
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anooshraja

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GetSomeLife said:
Q1:
a) 06 41
b) Total profit = difference/cost price * 100
= 0.24/2.62 * 100
= 9.16 %

Q2:
Absolute error of the number of bicycles = 1000000/2 = 500000
Upper bound of number of bicycles = 9000000 + 500000 = 9500000
Absolute error of distance traveled by 1 bicycle in one day = 0.1/2 = 0.05
Upper bound of of distance traveled by 1 bicycle in one day = 6.5 + 0.05 = 6.55

Upper bound of the total distance traveled by all the bicycles in one day = 9500000 * 6.55 = 62225000 km

Q3:
a) £1 = $1.96
£25000 = $49000
Later:
$1 = £(1/1.75)
$49000 = £[(1/1.75)* 49000]
$49000 = £28000

Profit = difference/initial cash * 100 = (28000-25000)/25000 * 100 = 12 %

Q4:

a) V of statue/V of model = (H of Statue/H of model)^3
(5*100*100*100)/Vm = (2*100/4)^3
Simplify:
Vm = (5000000)/(125000)
Vm = 40 cm^3
b)
40 cm^3 = ? m^3
1 cm^3 = (1/1000000) m^3
40 cm^3 = [(1/1000000)*40] m^3
40 cm^3 = 4*10^-5 m^3

Q5:
a)
Vs/Vl = (Ls/Ll)^3
(Vs/Vl)^(1/3) = Ls/Ll
Convert litres to cubic cm
(125/64000)^(1/3) = Ls/Ll
(5/40) = Ls/Ll

Ls:Ll = 5:40
Ls:Ll = 1 : 8
b)
(Vl/Vs)^(1/3) = (Al/As)^(1/2)
(6.4/0.0125)^(1/3) = (Al/0.0175)^(1/2) {notice that i changes the cm^2 to m^2}
Simplify:
Al = 1.12 m^2 :)
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thanks alott bt in last question why we multiply by power of 1/3 ?????????????????????????????
 
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anooshraja

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PLZ KINDLYYYYYY HEIP ME PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Q1) A cylindrical glass has a radius of 3 centimetres and a height of 7 centimetres.
A large cylindrical jar full of water is a similar shape to the glass.
The glass can be filled with water from the jar exactly 216 times.
Work out the radius and height of the jar

Q2) http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s08_qp_2.pdf question 3 and 20
 
GlitteringLights

GlitteringLights

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anooshraja said:
PLZ KINDLYYYYYY HEIP ME PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Q1) A cylindrical glass has a radius of 3 centimetres and a height of 7 centimetres.
A large cylindrical jar full of water is a similar shape to the glass.
The glass can be filled with water from the jar exactly 216 times.
Work out the radius and height of the jar

Q2) http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s08_qp_2.pdf question 3 and 20
Click to expand...

the answer is here :p
http://www.xtremepapers.com/community/threads/mathematics-post-your-doubts-here.2565/page-38
 
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anooshraja

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http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w07_qp_2.pdf QUESTION 21 PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s11_qp_21.pdf
QUESTION 4 PART B ,5,
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
 
MERIHAN

MERIHAN

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i need help in this question ..... EXPLANATION REQUIRED

Q In a polygon with n sides , half the interior angles are each 150 degree , and the other half are each 170 degree . calculate the value of n

ANSWER : 18
 
B

bluefa1con

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anooshraja said:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w07_qp_2.pdf QUESTION 21 PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s11_qp_21.pdf
QUESTION 4 PART B ,5,
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
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i was going to answer it but too many caps in a single post -_-
 
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