Answer:
See attached diagram
Step-by-step explanation:
Triangle ABC has vertices A(9,3), B(-7,-5) and C(-3,7).
The dilation with a scale factor of 1/4 centered at (5, -5) has the rule

Then



Answer:
5.5, 7, 8.5
Step-by-step explanation:
Find the mean of 4 and 10, that is
=
= 7
Now repeat with 4 and 7 and 7 and 10
=
= 5.5
=
= 8.5
Hence
4, 5.5, 7, 8.5, 10 ← is an arithmetic sequence with d = 1.5
The answer is 2, yous add all of them up and divide by how many there are.