If 7:15=56:x, then what is the value of x?

If x+y=15 a n d x y=56 , then what is the value of x^2+y^2? (a) 110 (b) 113 (c) 121 (d) Cannot be determined (e) None of these

If x+y=15 and xy=56, then what is the value of x^(2)+y^(2)?( a )110( b) 113(c)121 (d) Cannot be determined (e) None of these

If the mode of the scores 10, 12, 13, 15, 15, 13, 12, 10, x is 15, then what is the value of x?

If 2x-15=25 , what is the value of x?

If ( x+k) is the HCF of x^(2) + 5x + 6 and x^(2) + 8x + 15 , then what is the value of k?

If absx = 15 then what will be the value of x ?

If (x-xtan^(2)15^(@))/(1+tan^(2)15^(@))=sin60^(@)+cos30^(@) , then what is the value of x ?