An oxybromo compound, `KBrO_(x)` where `x` is unknown, is analysed and found to contain 52.92% Br. What is the value of x?

Given that f(x)=2x^2-3x .What is the value of f(x+2)

What is the value of d/(dx) (sec x ) ?

A polystyrene, having the formula Br_(3)C_(6)H_(3)(C_(3)H_(8))_(n) , was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find the value of n.

Consider the integral I=int(xe^x)/(1+x)^2dx What is the value of I

What is the value of lim_(x rarr pi/2) cos x ?

If (x-1) is to be a factor of p(x) = a^2x^2-4ax + 4a-1 .What should be the value of ‘a’ ?

if x=a+bt+ct^2 where x is in metre and t in second. if error in the measurement of time is 2% . what will be the error in x?

If the mean of the numbers x-50, x-20 , x-10, x+15, x+25, x+40 is 60 . What is the value of x ?

In air, element X is oxidised to compound XO_(2) , . If 1.0 gram of X reacts with 0.696 g of oxygen, what is the atomic weight of X?