A polyatomic ion is a group of atoms bond by covalent bonds with an unbalanced charge. A binary ionic compound is composed of atoms of two elements bond by an ionic bond.
Best illustrates that she is good emotional counselor and she can help tiffany
The disruption which is not a major cause of a high rate of species extinction on planet Earth is: c. earthquakes.
<h3>What is extinction?</h3>
Extinction refers to a situation in which a species, family, or other taxonomic group of living organisms such as animals or plants become extinguished, destroyed, or exterminated (dead).
This ultimately implies that, extinction literally means the extermination of a species, family, or other taxonomic group of living organisms. However, earthquakes are disruption which aren't a major cause of a high rate of species extinction on planet Earth.
Read more on species extinction here: brainly.com/question/17525293
#SPJ1
Option A would be disruptive. Option B may would likely not help and may also be disruptive. Option D would likely not work because he can't get through not understanding. The answer would be Option C.
Answer:
Explanation:
Given the data:
X ___ : 0____ 1 ___ 2 ____ 3 ____ 4
P(X)__: 0.35_0.3___, b ___0.05_ 0.05
Σp(x) = 1
Hence,
0.35 + 0.3 + b + 0.05 + 0.05 = 1
0.75 + b = 1
b = 1 - 0.75
b = 0.25
The mean :
E(x) = Σ(X * p(x))
E(x) = (0*0.35)+(1*0.3)+(2*0.25)+(3*0.05)+(4*0.05)
E(x) = 0 + 0.3 + 0.5 + 0.15 + 0.2 = 1.15
Standard deviation = sqrt(Var(x))
Var(x) = Σx²p(x) - E(x)
Σx²p(x) = (0^2 * 0.35)+(1^2 * 0.3)+(2^2 * 0.25)+(3^2 * 0.05)+(4^2 * 0.05)
= 2.55 - 1.15
= 1.4
Sqrt(1.4) = 1.183
