High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U. S. adults with high blood pressure is 0.2. A sample of 38 U. S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places.

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Step-by-step explanation:

let p is the Probability (which is a numerical description and explanation of how possible an event or occurrence is to happen or how possible it is for a proposition to come true. Probability is a figure between 0 and 1, where, approximately speaking, 0 point toward impossibility and 1 indicates certainty.) of US adults with high blood pressure = 0.2

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step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18