Answer:
2.5
Step-by-step explanation:
From the diagram, figure B was enlarged to obtain figure A.
The two figures are therefore similar.
The corresponding sides are in the same proportion. That constant value of the proportion is called scale factor.
It is given by:

Figure B is the image of A

Therefore the scale factor is 2.5
Answer:
I believe that the answer is D.
Step-by-step explanation:
Hope this helps!
7, 5, 1, 6, 2 Mean Absolute Deviation = 2.16
3, 6, 3, 2, 1 Mean Absolute Deviation = 1.2
Answer:
9/10
Step-by-step explanation:
Combined usually means to add. You only add the top.
Answer:
An exponential
Step-by-step explanation:
The second one is ratio