exam Maths Puzzle Numerical Ability

y=-2/3*
2x+3y=5

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exam Other Question

A spherical balloon is inflated so that its diameter is 40 ft.Find the surface area in the balloons covering and the volume of the gas.Show solutions and formulas. What are the values o k which will give 4x^2+(k+7)x+(k+4)=0 equal,real roots? Please help me?