Answer:
(3) Diagonals are perpendicular
Step-by-step explanation:
Answer:I don't know this one
Step-by-step explanation:
The answer would be c because 1-5-7 is the same as 5-8
Answer:
k=2/5
Step-by-step explanation:
It is the ratio of the amounts y and x:
k = y/x
Put another way: y = kx
We need a number to complete

Since we have

And so the expanded square is
