8. Solve the following simultaneous equations 2x = 1 – y , 4x + 5y = 8 . ...
17. ABCD is a square with sides measuring (x + 4) cm each. PQRS is a rectangle in which SR=(3x – 2) cm and QR = (5x + 8) cm. The area of the rectangle is twice the area...
5. The safe speed for a train rounding a corner is directly proportional to the square root of the radius. If the safe speed for a curve of radius 64 m is 12 m/s,...
10 Answer the whole of this equation on a sheet of graph paper. Suppose the original length of a candle is 12 cm and it takes 5 minutes for the candle to burn 2 cm . ...
7. The area of a rectangular yard, ABCD, is 100 m2. Inside the yard is a rectangular swimming pool, EFGH, whose sides are parallel to those of the yard. EF is 4 m from AB. FG, GH and HE are 1 m from...
5. Solve the following equations
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