Answer:
Hi Todoroki here! UwU
Explanation:
Chemical reaction which proceeds via absorption of heat energy is called endothermic reaction. These reactions are non-spontaneous reactions in which energy is required to initiate the reaction. These reactions are characterized by the positive heat flow (heat energy flows into the reaction) and increase in enthalpy (greater than zero).
<em>~happy to help!</em>
<h3>Answer:</h3>
- A — 1
- B — ∑[k=0..2] 15Ck(.24^k)(.76^(15-k))
- D — 12 and 3.1
- A — 0.1091
- B — 0.83 ...
<h3>Explanation:</h3>
1. The probability is 0.52 that the officer will pull over a driver and then the expected number more. So, if x is the expected number of drivers pulled over until one is not texting, we have ...
... x = 0.52(1+x)
... 0.48x = 0.52
... x = 0.52/0.48 = 13/12 = 1 1/12 ≈ 1 . . . . matches selection A
(<em>Comment on this result</em>: I find it interesting that these are the odds in favor of finding a driver who texts. That is, if the probability of texting is 0.98, the odds are 49:1 that a driver will be texting, and the expected number of pull-overs is 49.)
2. The probability of at most 2 being cured is the probability of 0, 1, or 2 being cured. You need to add up those probabilities. The sum in answer selection B does that.
3. The mean of a binomial distribution is ...
... μx = np = 60·0.2 = 12
... σx = √(np(1-p)) = √(12·0.8) ≈ 3.0984
These match selection D.
4. 20C14(0.8^14)(0.2^6) = 38760·.043980·0.000064 ≈ 0.109100 . . . matches A
5. mean(x) = 0.94; mean(x^2) = 1.58, so ...
... σx = √(1.58 -0.94²) ≈ 0.83 . . . . matches selection B
Philosophy is the study of the basic or underlying nature of knowledge, reality, and existence.
Answer:
Option A, The universe started at a central point, is the right answer.
Explanation:
Edwin Powell Hubble was an astronomer from America. He has played a very significant role in setting up the fields of extragalactic astronomy and observational cosmology. He has been credited with the founding of the Big Bang Theory. He made an observation about the Universe and explained that the Universe is continuously expanding. His finding supported that the Universe had a central starting point, almost all galaxies are moving away from us and that galaxies that are far from us move away faster.
