The small & large triangle are similar the we can write the following proportion/ratio:
8/(8+x) = 12/(12+18) ==> 12(8+x) =8(12+18) ==> 96+12x=240
12x =240-96 ==> 12x = 144 and x=12
Answer:
There will be 50 bacteria remaining after 28 minutes.
Step-by-step explanation:
The exponential decay equation is
N= Number of bacteria after t minutes.
= Initial number of bacteria when t=0.
r= Rate of decay per minute
t= time is in minute.
The sample begins with 500 bacteria and after 11 minutes there are 200 bacteria.
N=200
= 500
t=11 minutes
r=?
Taking ln both sides
To find the time when there will be 50 bacteria remaining, we plug N=50, = 500 and in exponential decay equation.
Taking ln both sides
minutes
There will be 50 bacteria remaining after 28 minutes.
Answer:
Gold, Orange, White, Blue
Step-by-step explanation:
Answer:4.5 hope this helps
Step-by-step explanation: