Which relationship is always correct for the angles p, q, and r of triangle abc?

a) p + r = q
b) p + q + r = 180 degrees
c) p + q + r = 90 degrees
d) q + r = p

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: