Answer:
The z-score of 90 is 1.35
Step-by-step explanation:
The z-score is calculated using the formula:
From the question, it was given that the mean is
and the standard deviation is
and x=90.
We substitute the given values to obtain:
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1 answer:
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Answer:
Step-by-step explanation:
To solve, divide.
This equals:
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A)
The slope-intercept form:
m - slope
b - y-intercept
The formula of a slope:
We have the points (2, 5.1) and (-1, -0.5). Substitute:
Therefore we have:
Put the coordinates of the point (-1, -0.5) ot the equation:
<em>multiply both sides by 2</em>
<em>add
to both sides</em>
<em>divide both sides by 2</em>
Answer:
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B)
We have the points (-2, 3) and (3, -4).
Calculate the slope:
Therefore we have:
Put the coordinates of the point (-2, 3) to the equation of a line:
<em>subtract
from both sides</em>
Answer: