Which equation represents a proportional relationship? y=−2x y=32x y = 4x + 3 y=2(x+1)
2 answers:
Answer:
Equation 1:
Equation 2:
Step-by-step explanation:
We are given equations in the question.
A proportionality relation can be represented in the form:
Thus, equation of the form, represents a proportional relationship.
Thus, are the equations that represent proportional relationship.
Equations, do not represent proportionality relationship.
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Using the normal distribution, it is found that approximately 40% of the scores are greater than 413.
<h3>Normal Probability Distribution</h3>The z-score of a measure X of a normally distributed variable with mean and standard deviation
is given by:
- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
In this problem, we have that the mean and the standard deviation of the scores are given by:
Approximately 40% of the scores are greater than the 60th percentile, which is <u>X when Z = 0.253</u>.
Then:
X - 400 = 50(0.253)
X = 412.65.
Rounding up, approximately 40% of the scores are greater than 413.
More can be learned about the normal distribution at brainly.com/question/24663213
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