Answer:
9,942 bacteria were there at 10 hours.
Step-by-step explanation:
Equation for population decay:
The equation for population decay, after t hours, is given by:
In which P(0) is the initial population and r is the decay rate, as a decimal.
Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours.
This means that and that when . So we use this to find r.
So
At this rate of decay, how many bacteria was there at 10 hours?
This is P(10). So
Rounding to the nearest whole number:
9,942 bacteria were there at 10 hours.
Answer:
36
Step-by-step explanation:
4(5(2)-1)
4(10-1)
4(9)
36
Hope this helps!
Answer:
D=6
Step-by-step explanation:
A quick and easy way to find the distance between these points is to use the distance formula: d= √(x2-x1)^2 + (y2-y1)^2, where (x1,x2) and (y1,y2) are the coordinates of the first and second point. (It doesn't matter which point is (x1,x2) or (y1,y2), just stay consistent)
Plug in the coordinates:
d= √(0-(-6)^2+ (8-8)^2
Simplfy
d=√(6)^2+(0)^2
d=√36
d= 6
Answer:
Step-by-step explanation: