What is the mapping rule for a 180 degree rotation about the origin?
(x, y)g(–y, x)
(x, y)g(–y, –x)
(x, y)g(–x, –y)
(x, y)g(x, –y)

(x, y)g(–x, –y)

Step-by-step explanation:

Rule: (x,y) --> (-x, -y)

Therefore, (x, y)g(–x, –y)

I hope this helped, have a good rest of your day!

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation:

too hard the other guy did it

step-by-step explanation: