Answer:
2.9
Step-by-step explanation:
Answer:
Totally Rational
Step-by-step explanation:
-16/-2 would give you 8 which is a rational number
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i think its d! hope that helps! is that flvs?
A petri dish is simply a circle; thus, we use the formula of the area of the circle which is <span>πr^2.
Given r = 40 mm
A = </span>π(40)^2 = <span>5026.55 sq. mm
</span>
Population density = bacteria count / area
PD = 2,100 / <span>5026.55
PD = </span><span>0.417782 bacteria / mm sq.
Therefore, the answer is approximately 0.418 </span><span>bacteria per square millimeter.</span>