ICSE − Q & A

If a>x>0, prove that (a^2-x^2):(a^2+x^2)>(a-x):(a+x).
Please prove it.

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

In the chapter of Linear Inequations, do we have to learn about the Set builder form or not ? is it part of the syllabus ?

Please answer 
Concise Pg 276 question 53
Please do with steps

Can anyone upload the graph sheet i.e 2cm is 1 unit .............PLS I JUST NEED FOR PRACTISE...........Need it urgently .........Also one req use cam scanner to edit it exactly and then use original font>>>>>>>

Kindly provide full working - A cumulative deposit account of monthly installment of Rs.1200 at 9%p.a. simple interest earns an interest of Rs.5994.Find the number of installments paid .(Ans-36)

Do we have to show each and every calculation side by side in the rough work column ???

Question in comments.

Pls answe this ques.

pls ansthe question