Given that the triangle is dilated by factor 3, the image will be found as follows; The object is at: A(-7,-3), B(-3,-2), C(-4,-5) when the image was enlarged the new coordinates will be: A'=3(-7,-3)=(-21,-9) B'=3(-3,-2)=(-9,-6) C'=3(-4,-5)=(-12,-15) since the image is centered at the point (-7,-6), the final point will be at: A"=[(-21+-7),(-9+-6)=(-28,-15) B''=[(-9+-7),(-6+-6)]=(-16,-12) C''=[(-12+-7),(-15+-6)]=(-19,-17) thus the coordinates of the final image are: A''(-28,-15),B''(-16,-12),C''(-19,-17)
Average is defined as the ratio of the sum of the number of the data sets to the total number of the data. The average actually determines the middle value of the data.
Given that the total number of books checked out of the library at your high school is 14,400 and the student population is about 2400.
The average is calculated by dividing the sum of the total number of items by the total counts of the items.
Average = 14400 / 2400
Average = 6
Therefore, the number of books taken by each student is 6.