<span>The exponential equation for this is given by: A = Be^t.
Where A = 1700 B = 100 e =?
1700 = 100e^(8)
e^8 = 17000/100 = 170
So e = 8âš170 = 1.9</span>
Is this from khan academy?
Answer:
answers is c
Step-by-step explanation:
Let the time taken for the first pipe to fill the pool be x hours
time taken for second pipe to fill the pool is (x+7) hours
time taken for both pipes to fill the pull =(x-9) hours
thus fraction of time taken for both will be written as:
1/(x-9)
thus total fraction for pipe 1 and 2 will be
1/x+1/(x+7)=1/(x-9)
solving for x we get:
x=-3 or x=21
but time is positive, then time taken by first pipe is 21 hours
time taken by both pipes will be 21-9=12 hours
