[" 17"quad " (vi) "(15)/(u)+(2)/(v)=17],[=8quad (1)/(u)+(1)/(v)=(36)/(5)]

Solve the following system of equations: (15)/(u)+(2)/(v)=17,quad (1)/(u)+(1)/(v)=(36)/(5)

Add the following rational numbers: {:((i) (-2)/(5) and (4)/(5),(ii) (-6)/(11) and (-4)/(11) , (iii) (-11)/(8) and (5)/(8)), ((iv) (-7)/(3) and (1)/(3),(v) (5)/(6) and (-1)/(6),(vi) (-17)/(15) and (-1)/(15)):}

Solve the following system of equations: (15)/u+2/v=17 ,\ \ \ 1/u+1/v=(36)/5

Simplify: 10(1)/(8) of (12)/(15)-:(35)/(36) of (20)/(49)*( a) 17(5)/(12) (b) 17(8)/(17) (c) 20(3)/(25) (d) 20(103)/(250)

Solve the following pair of linear equations by substitution method : 15/u + 2/v =17 , 1/u + 1/v =36/5 .

A car moves from X to Y with a uniform speed v_u and returns to X with a uniform speed v_d . The average speed for this round trip is : (a) (2v_(d)v_(u))/(v_(d)+v_(u)) (b) sqrt(v_(u)u_(d)) (c) (v_(d)v_(u))/(v_(d)+v_(u)) (d) (v_(u)+v_(d))/(2)

The square root of the complex number z= (u^(2))/(v^(2))+(v^(2))/(u^(2))+(1)/(2i)((u)/(v)+(v)/(u))+(31)/(16) is (in terms of u, v, w )

The square root of the complex number z =(u^(2))/(v^(2))+(v^(2))/(u^(2))+(1)/(2i)((u)/(v)+(v)/(u))+(31)/(16) is