35 + 15 x 1.5 = ?

Additional Bits: 5x- sqrt 5 = 15 - sqrt 5, x= _____________

x^17 / x^15 =

[(Tan ( pi - x) Tan (1.5 pi + x))/(Cos^(2)(x-1.5pi))-(Cos(1.5pi + x))/(Sin(pi-x))]Sin^(2) (2pi-x)=

2.45x + 1.5 = 3.7x - 2.25 then x=_____

If sqrt(5) and -sqrt(5) are two zeros of the polynomial x^(3) + 3x^(2) - 5x -15 then its third zero is …………..

Mean of the data x_1 , x_2 , x_3 , x_4 , x_5 is 15. If each observation is multiplied 3, then the mean becomes

In a class there are 35 girls and 15 boys then the percentage of boys in the class is _____________