To understand the constraints on the variable \( s \) in the formula \( s = \sqrt{A} \), we need to consider the nature of the square root function and the variable \( A \).
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The value of s is restricted to:
- non-negative numbers (including zero): Since the square root of a non-negative number is defined and results in a non-negative value, \( s \) must be \( s \geq 0 \).
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The constraint on the variable s is written as:
- \( s \geq 0 \)
So the correct selections are:
- The value of \( s \) is restricted to non-negative numbers.
- The constraint on the variable s is written as \( s \geq 0 \).