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- 5/9×-3/7=-5/21
- 2x/3=-18
2x = -18×3
2x = -54
x = - 54/2
x = -27
5. root over 121= root over 11×11
=11
6. ratio is 75 Paise to 5 rupees
1rupees = 100 Paise
5 rupees = 500 Paise
( 75/500)Paise = (3/20) Paise
(3 : 20)Paise
9. rhombus = A = 1/2 ( product of the diagonal )
A = 1/2 (d1×d2)
A = 1/2(10cm×6cm )
A= 1/2×60cm
A = 30cm
10. Evaluate =( -4 )^-1×(-4)^-1
=(-1/4)×(-1/4)
=1/16
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