My lectural says 30 + or - 2 Is that right
ScanSolve AI Answer
Step-by-step solution
3 stepslet's check that.
The statement "30 + or - 2" likely refers to a measurement with an associated uncertainty or tolerance.
Interpret the notation.
The notation "30 + or - 2" means the measured value is 30, and the uncertainty is 2. This implies the true value is expected to be within the range of 30 - 2 to 30 + 2.
Calculate the range.
Lower limit: 30 - 2 = 28
Upper limit: 30 + 2 = 32Compare with normal values.
The normal resting respiratory rate for an adult is typically 12 to 20 breaths per minute. The range of 28 to 32 breaths per minute is significantly higher than the normal resting rate.
Conclusion: While the notation itself is a correct way to express a value with uncertainty, a respiratory rate of 30 ± 2 (meaning 28-32 breaths/min) is not a typical resting rate for an adult. It might be appropriate for someone exercising intensely or in certain medical conditions, but not for a resting individual.
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