exam Maths Puzzle Numerical Ability

square root of 6 (radical 3 + 5 radical 2)

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exam Other Question

7(3x+4)=8(2x+5)+13

2(x-3)-3(x+5)=3(x-2)-7

3x-5(3x-7)=2(x+9)+45
A coin was flipped 60 times and came up heads 38 times. (a) at the .10 level of significance, is the coin biased toward heads Show your decision rule and calculations. (b) Calculat