exam Maths Puzzle Numerical Ability

4x +2y = 4
3x + y = 4

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exam Other Question

The mean arrival rate of flights at O’Hare Airport in marginal weather is 195 flights per hour with a historical standard deviation of 13 flights. To increase arrivals, a new air A man burns approximately 121 calories by standing for a hour. A woman burns approximately 100 calories per hour when standing. Write each of these numbers as a power with an exponent other than 1.