Answer:
(-∞, -2) ∪ (-2, 6) ∪ (6, ∞)
Explanation:
The domain describes the x-values that can be used in a function.
The leftmost function contains all x-values until x = -2. This looks like (-∞,-2). Remember, open dots mean that the associated x-value is not included in the domain.
The middle function contains all x-values from x = -2 to x = 6. This looks like (-2, 6).
The rightmost function contains all x-values after x = 6. This looks like (6, ∞).
Answer:
the oxidation number is +2
Surface made with carbon and hydrogen would cause the most problems for the salamander that relied on hydrogen bonds to cling to surfaces.
Given that a salamander relied on hydrogen bonds to cling to surfaces.
We are required to find the surface that would cause the most problems for salamander.
Salamanders are basically a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body and if they relied on hydrogen bonds then the surface made with carbon and hydrogen would cause the problems.
Hence surface made with carbon and hydrogen would cause the most problems for the salamander that relied on hydrogen bonds to cling to surfaces.
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Using the appropriate sample size formula, the minimum number of samples required is 267
<u>Using</u><u> </u><u>the</u><u> </u><u>relation</u><u> </u><u>:</u>
- N = [(Z² × pq) / e²]
- e = Error Margin = 0.06² = 0.0036
- p = 0.5
- q = 1 - 0.5 = 0.5
- Zcritical at 95% = 1.96
<u>Substituting the values into the equation</u> :
N = [(1.96² × (0.5 × 0.5)) / 0.0036]
N = (0.9604 / 0.0036)
N = 266.777
N = 267
Hence, the minimum number of samples required is 267
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