As a health worker you need to identify a particular bacteria. You place a drop of the culture on a Petri dish at 9:30 AM to inc
ubate. The chart shows the growth rate of three different bacteria. At 12 PM you need to measure the diameter of the growth and find it to be about 1 cm. Which bacteria would you say the sample is?
A, B, C, or none of those listed?
A, B, C, or none of those listed?
1 answer:
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Answer:
Total Distance = 2 miles
Step-by-step explanation:
We know D = RT where
D is distance
R is rate (speed)
T is time
First Leg:
Rate = x mph
Time = 20/60 = 1/3 hour
Hence, D = RT, Distance = x * 1/3 = x/3 miles
Second Leg:
Rate = x - 1
Time = 30/60 = 1/2 hour
Distance = (x - 1) * 1/2 = (x-1)/2
Total distance is the sum of both the legs, hence,
Total distance = miles
Since both the distance are equal we can equate and solve:
Plugging this x = 3 into the total distance expression, we get:
Total distance, 2 miles