The circumference would be 27.21065 inches or 69.115 cm.
Reflection across y=x is a special case transformation

The original triangle has vertices A(-5,1), B(-4,3), C(-2,1), D(-3,-1) so the transformed triangle has vertices
A'(1,-5), B'(3,-4), C'(1,-2), D'(-1,-3)
Choice A'(1,-5)
Answer:
Nothing
Step-by-step explanation:
You can't divide by zero
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer: 3
Explanation: 7.50 - 5.25= 2.25 ÷ .75= 3