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[mehjabeen]

Salaam
how many of us enjoying doing maths?isnt it fun doing all the calculation!the area,perimeters!and the geometry!
so i thought y nt starting a math quiz in which one person will ask and the one who answers wil ask the next question!(o level maths only)
i hope the question should be never ending and inshallah it shall increase our knowledge more!
let me start with the first one(it has to be an easy one
simplify
2/3p^12 * 3/4p^8

[qamar]

Brilliant idea

The answer is (1/2)p^20

[mehjabeen]

yes u r right!
ur turn now!!!!!!!
hop its easy

[taha.dharamsi]

The Angle of Elevation of the top of the cliff is 42 degrees if the observer is standing 30m from the foot of the cliff calculate the height of the cliff

[mehjabeen]

the answer is 33.33333!

[mehjabeen]

is this answer right?

[mehjabeen]

Make x the subject of the formula
ax^2 + bx^2 - d^2 -= p^2

(workings needed as well)

[abuali]

ax^2 + bx^2 - d^2 -= p^2

a x X^2 + b x X^2 - d^2 =p ^2

\/a x X + \/b x X - d = p

x\/a + x\/b - d = p

x\/(a+b) - d = p

x\/(a+b) = p + d

x = (p + d)/\/(a+b)

[qamar]

is it correct mehjabeen?

[qamar]

if so, abuali post the next question

[abuali]

awaiting response from the questioner

[mehjabeen]

salaam,
k first m sooo sorry fr the late reply
according to the way i have done the calculations i m getting the answer
\/(p2+d2)/a+b
abuali is this wat u wrote?
sorry did nt understand
(cambridge paper 2 of 2008:ref)

[abuali]

Must have missed a step.


Could you post the workings please

Posted with TouchBB on my iPhone

[mehjabeen]

salaam,
ax^2+bx^2-d^2=p^2
ax^2+bx^2=p^2+d^2
x^2(a+b)=p^2+d^2
x^2=p^2+d^2/a+b
x=(sqareroot)\/p^2+d^2/a+b

[mehjabeen]

salaam,
figured out ur answer yeah ur correct abuali
congrates
k post the next question?