Question

Frank rounds a number, y, to the nearest ten.

His result is 20
Write down the error interval for y

Answer 1

The error interval for y is ±5.

Step-by-step explanation:

To find the error interval for the rounded number, we need to consider the range within which the original number could lie. Since the original number is rounded to the nearest ten, the error interval will be half of the interval between consecutive ten values. In this case, since the result is 20, the possible range for y would be 15 to 25, with an error interval of ±5.

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