A swimming pool has 2 input pipes, A and B. Pipe A can fill the pool in 3 days. Pipe B can fill the pool in 6 days. How long will it take to fill the pool using both pipes?

step-by-step explanation:

options

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

what are the statments

step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: