10.The volume V of a given mass of gas varies inversely as the pressure P. When V =2m3 ,P=500 N/m2 .Find the volume when the pressure is 400N/m2 Find the pressure when the volume is 5 m3 11.Draw a sketch graph similar to those inequalities and indicate the set of points which satisfy the inequalities by shading the un wanted regions.1≤ x ≤ 6 and 2 ≤ y ≤ 8 12.A ship sails 35km on a bearing of 0420 . a)How far north has it travelled? b)How far east has it travelled?
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