ICSE − Q & A

pls answer this question

Please provide full working- If two angles are acute such that 2 sin(A+B) = root 3 and          
2 cos (A-B) = root 3 ; find the values of angles A and B.

Two vessels contain a mixture of two liquids A and B
in the ratio 9:4 and 5:3.In which ratio must the liquids
must be taken from each vessel to give a mixture of liquid A and liquid B in the ratio of 2:1?

+ 1 more questions by vasudevakrishna  

If a>x>0, prove that (a^2-x^2):(a^2+x^2)>(a-x):(a+x). Please prove it.
asked by Siru Thondan (vasudevakrishna) 8 years ago
1

Please anyone explain me the meaning of (1) scale 1cm = 1 unit (2) 2cm=1 unit  using graph paper. Please upload it. I would be obeliged to you for your upload . please do it ... Please.... Please

i make a lot of silly mistakes in my calculations..any suggestion??

are those proving questions in circle asked??? Also do we need to practice those hard and tricky sums now as the board sums are quite easy.....Or is it ok if we just solve the board papers???

Equation of a straight line - find the equation of a line which passes through the point (22,-6) and is such that the intercept on x axis exceeds the intercept on y- axis by 5 .
Please show the working.

In grouped data, if it is not arranged, should we arrange in ascending order and then find median or directly find it? btw I asked all 4 maths teachers of Std X in my school and 2 told u gotta arrange and two said u shud not arrange! So what do u think we have to do?

Is cylinder out of course

There are 3 containers of equal capacity and all are completely filled with mixtures of acid and water in different ratios.The ratio of acid to water in the 1st container is 2:3 ,in the 2nd container is 3:7, in the 3rd container is 4:11.If the mixtures of all the 3 containers are mixed together ,what will be the ratio of acid to water in it ?? guys plz try this...i'm not getting it..its from concise book pg 430 question 1 (b) bit