The similarity ratio of ΔABC to ΔDEF = 2 : 1.
Solution:
The image attached below.
Given ΔABC to ΔDEF are similar.
To find the ratio of similarity triangle ABC and triangle DEF.
In ΔABC: AC = 4 and CB = 5
In ΔDEF: DF = 2, EF = ?
Let us first find the length of EF.
We know that, If two triangles are similar, then the corresponding sides are proportional.
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Ratio of ΔABC to ΔDEF = 
Similarly, ratio of ΔABC to ΔDEF = 
Hence, the similarity ratio of ΔABC to ΔDEF = 2 : 1.
Answer:
a
Step-by-step explanation:
When faced with potential outliers, statisticians sugges to run the analysis with and without the outliers and compare the results. Your finding would be more trustworthy and valueable.
Using formula AB^2 = BD *(CD + BD)
AB^2 = 16 * (16+9)
AB^2 = 16 * 25
AB^2 = 400
AB = sqrt(400)
AB = 20