exam Maths Puzzle Numerical Ability

please help.find the length and width of rectangle ABCD . Toop left A top right D bottom left B bottom right C .between B and C is P=140 cm. between D and C is x.Thanks for helpin

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exam Other Question

quadratic function in standard from for

(0,3) (1,-4) (2,-9)
How can I rewrite this problem as a single logarithm: 7lnx + 4lny -3lnz