Answer:
720
Step-by-step explanation:
nPk = n!/(n-k)!
10P3 = 10!/(10-3)! = 10!/7!
= 10·9·8 = 720
Answer:
General equation of a line:

then express in that form:

It's the rectangle, if we rotate it about y-axis, it would create a cylinder..
The slope is positive
Slope that looks like
/ is positive
\ is negative
C: pie
is a irrational number!