Please help me. When you have your blood pressure measured during a physicalexam

Question

Please help me. When you have your blood pressure measured during a physicalexamination, the nurse or doctor will record two numbers as aratio-for example, 120/80. The first number(systolic pressure) represents the amount ofpressure in the blood vessels when the heart contracts(beats) andpushes blood through the circulatory system. The second number(diastolic pressure) represents thepressure in the blood vessels at the lowest point between theheartbeats, when the heart is at rest. Acconding to the NationalInstitutes of Health, normal blood pressure is below 120/80,moderately high is fron 140/90 to 159/99, and severe is higher than160/100. The blood presure of a particular person is modeledapproximately by P=135 + 30 cos 2.5t Where P is pressure in millimeters of mercury t seconds afterthe heart contracts. (A) Express the person's blood pressure as anappropriate ratio of two numbers. Explain how you arrived at thesenumbers. (B) What is the period of the heartbeat? (C) What is the pulse rate in beats per minute? Show yourcompulation. (D) Graph the equation in a graphing utility for . Explain how you would find the person's bloodpressureas a ratio using the graph. Find the person's bloodpressure usng this method. [ compare wiht part(A) ] Please help me. When you have your blood pressure measured during a physicalexamination, the nurse or doctor will record two numbers as aratio-for example, 120/80. The first number(systolic pressure) represents the amount ofpressure in the blood vessels when the heart contracts(beats) andpushes blood through the circulatory system. The second number(diastolic pressure) represents thepressure in the blood vessels at the lowest point between theheartbeats, when the heart is at rest. Acconding to the NationalInstitutes of Health, normal blood pressure is below 120/80,moderately high is fron 140/90 to 159/99, and severe is higher than160/100. The blood presure of a particular person is modeledapproximately by P=135 + 30 cos 2.5t Where P is pressure in millimeters of mercury t seconds afterthe heart contracts. (A) Express the person's blood pressure as anappropriate ratio of two numbers. Explain how you arrived at thesenumbers. (B) What is the period of the heartbeat? (C) What is the pulse rate in beats per minute? Show yourcompulation. (D) Graph the equation in a graphing utility for . Explain how you would find the person's bloodpressureas a ratio using the graph. Find the person's bloodpressure usng this method. [ compare wiht part(A) ]

Explanation / Answer

P=135 + 30 cos 2.5t Where P is pressure in millimeters of mercury t seconds afterthe heart contracts. (A) Express the person's blood pressure as anappropriate ratio of two numbers. Explain how you arrived at thesenumbers. 165 /105         : Cos varies from -1 to 1. Multiply this by 30 the add andsubtract from135. (B) What is the period of the heartbeat? Period is the time of one pulse: 1 = (2) / (2.5*t)    :multiply bothsides by t t = .8 sec (C) What is the pulse rate in beats per minute? Show yourcompulation. (60 sec / 1 min) * (1 beat / .8 sec) = 75 beats / min. (D) Graph the equation in a graphing utility for . Explain how you would find the person's bloodpressureas a ratio using the graph. Find the person's bloodpressure usng this method. [ compare wiht part(A) ] I am unable to upload an image. This has caused InternetExplorer to crash

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