Long ago, many people believed that living things could come from nonliving things. They thought that worms came from wood and that maggots came from decaying meat. This idea was called spontaneous generation. In 1668, an Italian biologist, Francesco Redi, did experiments to prove that maggots did not come from meat. One of his experiments is described below. Redi placed pieces of meat in several jars. He divided the jars into two groups. He covered the first group of jars with fine cloth. He left the second group of jars uncovered. Redi observed the jars for several days. He saw flies on the cloth of the covered jars, and he saw flies laying eggs on the meat in the uncovered jars. Maggots appeared only on the meat in the group of jars left uncovered. What was the variable in his experiment? O Covering one jar and leaving the other uncovered. O Covering both jars. O Leaving both jars uncovered. Killing flies

Long ago, many people believed that living things could come from nonliving things. They thought that worms came from wood and that maggots came from decaying meat. This idea was called spontaneous generation. In 1668, an Italian biologist, Francesco Redi, did experiments to prove that maggots did not come from meat. One of his experiments is described below. Redi placed pieces of meat in several jars. He divided the jars into two groups. He covered the first group of jars with fine cloth. He left the second group of jars uncovered. Redi observed the jars for several days. He saw flies on the cloth of the covered jars, and he saw flies laying eggs on the meat in the uncovered jars. Maggots appeared only on the meat in the group of jars left uncovered. What was the variable in his experiment? O Covering one jar and leaving the other uncovered. O Covering both jars. O Leaving both jars uncovered. Killing flies

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Question 4 Read and solve the problem; choose the best answer(s) from the choices provided. Choose an American adult at random. The probability that you choose a woman is 0.52. The probability that the person you choose has never married is 0.24. The probability that you choose a woman who has never married is 0.11. The probability that the person you choose is either a woman or never married (or both) is therefore about Your answer: O 0.76 0.65 O 0.12 0.87
QUESTION 9 If a die is rolled 10 times in a row and the number 3 never lands face up, then the chance of rolling a 3 on the 11th roll is higher than 1/6. the chance of rolling a 3 on the 11th roll is lower than 1/6. the chance of rolling a 3 on the 11th roll is equal to 1/6.
number of moving glasses by half. Here is another classical problem similar to the one just described but a little more difficult. There are n things lined up next to another n things like this : XXX.....OOO........ However, we define a different way to "move", where you can only move any pair of neighbouring items to an empty space in a row, and you can't change the left-right order of the items. Then, let we think, it is meaningless when n=1, and when n=2 it is no answer. When n=3,the solution process is as follows. XXXOOO XOOOXX XOO XOX OXOXOX ,it should look like this, and we can move .. So when n > 2,we should at least move n times to solve the problem, could you formulate the solution process for n greater than or equal to 3?
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Quèstion 3 There are 85 number of ways to select 6 people out of 10, of which a particular person is not included. True False
Answer the following questions, similar to those found in problem 23 of section 2.3 in your text. Assume that there are 10 girls and 11 boys in the neighborhood club, and a team of 7 is to be selected. (1) How many different teams can be selected? (2) How many different teams can be selected if each team must contain exactly 3 girls and 4 boys? (3) How many different teams can be selected if each team must contain both boys and girls?
In a classic study of problem solving, Duncker (1945) asked participants to mount a candle on a wall in an upright position so that it would burn normally. One group was given a candle, a book of matches, and a box of tacks. A second group was given the same items, except that the tacks and the box were presented separately as two distinct items. The solution to this problem involves using the tacks to mount the box on the wall, creating a shelf for the candle. Duncker reasoned that the first group of participants would have trouble seeing a new function for the box (a shelf) because it was already serving a function (holding tacks). For each participant, the amount of time to solve the problem was recorded. Data similar to Duncker’s are as follows. Time to Solve Problem (in sec.) Box of Tacks Tacks and Box Separate 128 42 160…
According to Wikipedia, Marie Skłodowska Curie (7 November 1867 - 4 July 1934) was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity. She was the first woman to win a Nobel Prize, the first person and the only woman to win the Nobel Prize twice, and the only person to win the Nobel Prize in two different scientific fields. She was part of the Curie family legacy of five Nobel Prizes. She was also the first woman to become a professor at the University of Paris, and in 1995 became the first woman to be entombed on her own merits in the Panthéon in Paris. Madame Curie died 1934 from aplastic anaemia, a rare condition linked to high levels of exposure to the radioactive elements polonium and radium. Due to her many years of exposure to these radioactive. elements, her remains are dangerously radioactive and are entombed in a lead-lined coffin in France's Panthéon. The thick lead shields visitors to the Panthéon from the dangerous…
After a 30-member battalion fled, the general ordered the battalion to suffer decimation as punishment. In a decimation, one of out of every ten soldiers is killed. Assuming they are killed at the same time (so that it doesn't matter what order they are chosen), how many ways can the battalion be decimated?
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