During the construction of the quebec bridge in 1907, the bridge's designer, theodore cooper, received word that the suspended span being built out from the bridge's cantilever was deflecting downward by a fraction of an inch (2.54 centimeters). before he could telegraph to freeze the project, the whole cantilever arm broke off and plunged, along with seven dozen workers, into the st. lawrence river. it was the worst bridge construction disaster in history. as a direct result of the inquiry that followed, the engineering "rules of thumb" by which thousands of bridges had been built around the world went down with the quebec bridge. twentieth-century bridge engineers would thereafter depend on far more rigorous applications of mathematical analysis. which one of the following statements can be properly inferred from the passage? a. bridges built before about 1907 were built without thorough mathematical analysis and, therefore, were unsafe for the public to use. b. cooper's absence from the quebec bridge construction site resulted in the breaking off of the cantilever. c. nineteenth-century bridge engineers relied on their rules of thumb because analytical methods were inadequate to solve their design problems. d. only a more rigorous application of mathematical analysis to the design of the quebec bridge could have prevented its collapse. e. prior to 1907 the mathematical analysis incorporated in engineering rules of thumb was insufficient to completely assure the safety of bridges under construction.

B - Coopers absences from the Quebec Bridge site resulted in the breaking off of the cantilever.

If Cooper had been onsite for the bridge construction, it would have saved time - allowing them to stop construction and the several dozen workers time to escape. It too valuable time to send the telegraph, to locate Cooper and have him read it as well as return the telegraph.

E. Prior to 1907 the mathematical analysis incorporated in engineering rules of thumb was insufficient to completely assure the safety of bridges under construction.

Explanation:

Option E is the best answer. In the text is says that "the engineering 'rules of thumb' by which thousands of bridges had been built around the world went down with Quebec Bridge." This shows that the "rules of thumb" that were used in the 18th century could completely assure the safety of bridges under construction. The passage then goes on to say that engineers relied on a more rigorous mathematical analysis. This lets us infer that the original analysis was insufficient. Option A is wrong because not all bridges were unsafe for public use. There are still bridges that are used by the public today that were built in the 18th century. Option B is simply false. Option C is incorrect because we don't actually know anything about the analytical methods of the time period. Option D is also wrong because we don't know if that is the only solution to the problem.

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.