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pH is a measure of the concentration of H+ ions contained within a given volume of a solution. Adding water, without increasing the amount of hydrochloric acid particles within the solution, increases the...

First we will simplify 4/sqrt(x) so it is easier to integrate.sqrt(x) is equal to x^1/2, therefore 4/sqrt(x) = 4/x^1/2 .We bring up x^1/2 so 4/x^1/2 becomes 4x^...

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There are 30 counters in total in the bag. If we visualise the ratio as there being x red counters and 5x green counters, we find that there are 6x counters in total in the bag, and thus we can conclude t...

4(5-X^2)/(X^2+5)^2