Marvellous

A contains 1.60g of trioxonitrate(v) acid in 250cm³ of the solution. B contains 9.0gdm3 of XHCO3, 25cm³ portions of B required an average of 24.90cm³ of A for complete neutralization, calculate the: a) concentration of acid in A in mol/dm³. b) concentrati...

Speed of light ÷ the wavelength

How did you get 15x^2+10xy_3xy_2y^2

How can I find the height

270/360 *2*22/7*7=33 2πr=33 2*22/7=33 44/7*x=33 X=33*7/44 X=5.25

Akingbade is Correct but is the remaining part a^-1(1+a)=~a since we are looking for a^-1 then we make a^-1 the subject of Formula a^-1=-a/(1+a)

I need a very clear explanation pls