The recurrence relation for the number of bit strings of length n that do not contain three consecutive zeros is; aₙ = aₙ ₋ ₁ + aₙ ₋ ₂ + aₙ ₋ ₃
<h3>How to solve recurrence relations?</h3>
Let Sₙ represent a string of length n that does not have 3 consecutive zeros, and let aₙ be the number of such strings.
If we take a string of length n − 1 that does not contain 3 consecutive zeros which is sₙ ₋ ₁.
Now, when we add a₁ to the string, we will have a string sₙ.
If we take a string sₙ ₋ ₂ and add 10 at the end, it will produce a string sₙ.
If we take a string sₙ₋₃ and we add 100 at the end, we will obtain a string sₙ. We see that this string is different from the first two that ended with 1 while this ended with 00. Thus, there are no other possibilities without having 3 consecutive zeros. Thus, we have the recurrence relation as;
aₙ = aₙ ₋ ₁ + aₙ ₋ ₂ + aₙ ₋ ₃
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The term which best describes the region "b" of the phospholipid model in the attached image (below) is: Hydrophobic.
Phospholipids are also referred to as phosphatides and they are a type of lipid whose molecule comprises the following:
- A hydrophilic "head" that contains a phosphate group.
- Two (2) hydrophobic "tails" joined by an alcohol residue and that are mainly derived from fatty acids.
This ultimately implies that, a large potion of the cell (plasma) membrane is made up of lipids, which are mainly phospholipids and they control the movement of large hydrophilic molecules such as alkanes, oils, and fats.
In conclusion, hydrophobic is a term that is used to describe the tail or lower part of a phospholipid model, which is the "b" region in the image attached below.
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Answer:
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Answer:B. Health, Safety, and Environmental Management
Explanation:
The hypocenter is the point within the earth<span> where an earthquake rupture starts. The epicenter is the point directly above it at the surface of </span>the Earth<span>.</span>
