Answer:
9) The scale factor is 3/2
10) The scale factor is 4/3 and the missing length is 9
Step-by-step explanation:
9) The triangles are similar because 6/4 = 9/6 = 3/2
The scale factor is 6/4 = 3/2
10) If the rectangular gardens are similiar then the scale factor is 16/12 = 4/3
(The scale factor is always > 1)
=> 12 / x = 4/3 => 4x = 12·3 => x = 9
