Question

1.what is the value of {2-3(2-3)³ }^3_?

2.If 10^2y=25,then y=?

3.If 9^x+2=240+9x,then x=?

4.If 10^x =64,what is the value of 10^x/2+1?

5.If g=t^2/3 +4t^-1/2 , what is the value of g when t = 64?

Answer 1

4) 10^x = 64
⇒ Now taking square root on both side we get ,

10^x/2= 64^1/2 = 8

Thus 10^x/2 + 1 = 8 + 1 = 9

5) g = t^2/3 + 4t^-1/2 at t = 64

Put t = 64 in the above equation we get ,

⇒ 64^2/3 + 4(64^-1/2)

⇒ 16 + 4*1/8 = 33/2