If `4:3=x^2: 12 ,` then the value of `x\ (x >0)dot` 16 (b) 4 (c) 9 (d) 3

If 4:3=x^2: 12 , then the value of x\ (x >0)dot (a) 16 (b) 4 (c) 9 (d) 3

If 4:3=x^(2):12, then the value of x(x>0)16( b) 4(c)9(d)3

If 5:4 :: 30 : x , then the value of x is (a) 24 (b) 12 (c) 3/2 (d) 6

If (45)/(60) is equivalent to 3/x , then the value of x is (a) 3 (b) 6 (c) 4 (d) 9

If (4^3)(4^6)(4^9)(4^(12))(4^(3x))=(0. 0625)^(-54) , the value of x is (a)27 (b) 28 (c) 29 (d) 30

The greatest integral value of a such that sqrt(9-a^(2)+2x-x^(2))>=sqrt(16-x^(2)) for at least one positive value of x is (a) 3 (b) 4 (c) 6 (d) 7

If (45)/(60) is equivalent to 3/x , then the value of x is 3 (b) 6 (c) 4 (d) 9

Let (2x^(2)+3x+4)^(10)=sum_(r=0)^(20)a_(r )x^(r ) , then the value of (a_(7))/(a_(13)) is (a) 6 (b) 8 (c) 12 (d) 16

Let (2x^(2)+3x+4)^(10)=sum_(r=0)^(20)a_(r )x^(r ) , then the value of (a_(7))/(a_(13)) is (a) 6 (b) 8 (c) 12 (d) 16

The greatest integral value of a such that sqrt( 9 - a^2 + 2x - x^2) >= sqrt(16 - x^2) for at least one positive value of x is (a) 3 (b) 4 (c) 6 (d) 7