ianmartin6080
17.03.2020 •
Mathematics
Freemont Run Club surveyed a random sample of 30 of their members about their running habits. Of the members surveyed 9 said that they run more than 5 days a week. Their are 84 Freemont run club members. Based on the data, what is the most reasonable estimate for the number of Freemont Run Club members who run more than 5 days a week.
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Ответ:
Option B. Reflection across the y-axis
Step-by-step explanation:
As shown at the graph:
A(-4,0) , B(0,0) , A'(4,0) , B'(0,0)
We can note that B and B' are coincide
So, we need to find which transformations make A coincide with A'
A. Reflection across the x-axis ⇒ Wrong
Because it will give the same point A
B. Reflection across the y-axis ⇒ True
The rule of reflection across the y-axis (x,y)→(-x,y)
So, A(-4,0) → A'(4,0)
Both of C. Clockwise 90 rotation around the point B
D. Counterclockwise 90 rotation around the point B
Are Wrong because it will make the image of A lies on y-axis.
So, The answer is option B