Answer:
AB = 10π
Step-by-step explanation:
The length of the arc is calculated as
arc = circumference of circle × fraction of circle
= 2πr ×
= 2π × 12 × ← cancel 12 on numerator/ denominator, leaving
AB = 2π × 5 = 10π
The ratio 25:45 in simplest form is 5:9 5:8 9:5
2 answers:
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Answer:
a) P(24) = 1025.
b) P(24) = 191.
Step-by-step explanation:
This population can be modeled by the following exponential model.
In which P(t) is the population after t hours, is the initial population and r is the decimal growth rate.
The initial number of bacteria in the culture is 28. This means that .
Population after 24 hours.
(a) No antibiotic is present, so the relative growth rate is 15%.
So r = 0.15.
(b) An antibiotic is present in the culture, so the relative growth rate is reduced to 8%.
So r = 0.08.