exam Maths Puzzle Numerical Ability

determin the area of a pentagon of radius 40cm

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exam Other Question

Carol weighs 3 times as much as Sue. Both weights are whole numbers. The sum of their weights is less than 160 pounds. find the greatest possible weight in pounds for each girl. A coin was flipped 60 times and came up heads 38 times. (a) at the .10 level of significance, is the coin biased toward heards? Show your decision rule and calculations. (b) Calculate a p-value and interpret it.