Answer:
4.25 wewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewewe
Step-by-step explanation:
Step-by-step explanation:

I hope it makes sense
:)
The length can be found using the Pythagorean Theorem...
c^2=a^2+b^2 and in this case:
d^2=(dx^2)+(dy^2)
d^2=(3-7)^2+(12-9)^2
d^2=-4^2+3^2
d^2=16+9
d^2=25
d=5
So the length of AB=5 units.
Substitute z with 3.
3(4)^3
Cube 4 with 3
3(64)
Multiply 3 and 64
=192