Answer:
5
Step-by-step explanation:
Since these are similar triangles you can use any two corresponding sides to figure out the scale factor.
Use the bottom side. Going from the first triangle to the second the scale factor is:
15/9 = 5/3
Got you. So we will use the basic formula for the area of a rectangle and insert variable values. (^_^)
Area= Width(Height) ----------- Insert values of width and height [width = (x-1)
, height = (x+9)]
Area= (x-1)(x+9) ) -------------- Then expand if needed?
= x² +8x -9
Total songs = 1240
Rock songs = 40%
Songs that are not rock = 100 - 40 = 60%
It would be: 1240 * 60% = 1240 * 0.60 = 744
In short, Your Answer would be 744
Hope this helps!
