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ivann1987 [24]
3 years ago
5

on may 11, 50 randomly selected subjects had their systolic blood pressure recorded twice- the first time at about 9:00am and th

e second time at 2:00pm. if one were to examine the relationship between the morning and afternoon readings, then one might expect the correlation to be
Advanced Placement (AP)
2 answers:
Elanso [62]3 years ago
7 0

Answer:

morning blood pressure is lower while the 2pm would be higher

Ann [662]3 years ago
7 0

Answer: High and Positive, as those with relatively high reading in the morning will tend to have relatively high reading in the afternoon (b)

Explanation:

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X-y=16 7x+2y=13 solving system of Equations by substitution
matrenka [14]

Answer:

The answer is "x= -\frac{19}{5} \ and \ y= - \frac{99}{5}"

Explanation:

\to x-y=16..........(a) \\\\ \to 7x+2y=13.........(b)\\

In equation (a) multiply by 2 then subtract from the equation (b):

7x+2y=13\\\\2x-2y=32\\\\- \  -\ =  -\ \\\\5x = -19 \\\\x= -\frac{19}{5}

put the value of x in equation (a):

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