sat answers

7/28/2019 SAT Answers

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1. Correct Answer: C

• Here's Why:

Choice (C) is correct. It makes sense to say that when his factory exploded, Nobel

discovered how “volatile,” or unpredictable, nitroglycerin could be; in fact, it was“liable” to, or prone to, detonate unexpectedly.

• Question Type: Sentence Completions

(Critical Reading)


•

Here's Why:

Choice (C) is correct. It avoids the error of the original by using the idiomatic“known as” instead of the awkward and unidiomatic “known to be.”

• Question Type: Improving Sentences

(Writing)

3. Correct Answer: E

• Here's Why:

Note: Figure not drawn to scale.

First, add the labeled points A, B, C , D, E , and O to the figure, as shown above.Then segment bisects AOC , so m AOB = m BOC , and m AOB + m BOC = x° = 60°. Thus, m AOB = m BOC = 30°. Similarly, m COD = m DOE = 20°, because COD and DOE are of equal measure and the sum of their measures is



y° = 40°. From the figure, it follows that z ° = m BOC + m COD = 30° + 20° =50°. Therefore, z = 50.

• Difficulty: Easy

• Question Type: Standard Multiple Choice

(Mathematics)


• Here's Why:

Choice (C) is correct. Governor Anderson’s appointment of a personal friendwould be considered another instance of the “cronyism,” or favoritism toward

personal friends, of which he had been previously accused.


(Critical Reading)


• Here's Why:

The error in this sentence occurs at (C), where a sentence fragment is created. Tofix this problem, use “have” as the main verb of the sentence.

• Question Type: Identifying Sentence Errors

(Writing)

6. Correct Answer: D

• Here's Why:

If the average price of all 20 + 50 + 100 = 170 marbles was exactly $0.08 each,then the total price of all the marbles was (170)(.08) = 13.60 dollars. Therefore,the price of the 100-marble bag was 13.60 – 2.00 – 4.00 = 7.60 dollars.

• Difficulty: Medium




(Mathematics)

7. Correct Answer: B

• Here's Why:

The error in this sentence occurs at (B), where there is noun-noun disagreement.The singular “a member” does not agree with the plural “trees.”


(Writing)


• Here's Why:

Choice (B) is correct. Since the reviewer is openly favoring the discussion of “details of the author’s life,” or “biographical matters,” she is clearly “in opendefiance of” current practice, which “eschews,” or shuns, speaking of such things.

•

Question Type: Sentence Completions

(Critical Reading)

9. Correct Answer: A

• Here's Why:

If the function ƒ is defined by ƒ( x) = 2 x + 3, and ƒ(a) = 11, then ƒ(a) = 2a + 3 =

11. Therefore, a = = 4.



(Mathematics)




• Here's Why:

Choice (E) is correct. It avoids the error of the original by removing the vague pronoun “it” so that the percentage of orange juice produced by Florida is directlycompared with the percentage produced by Brazil.


(Writing)


• Here's Why:

The first missing term must characterize the manager’s response to a drop in salesthat shes sees as a result of her department’s “lack of effort.” It is logical toconclude that the store manager “upbraided,” or scolded, her employees out of indignance, or righteous anger.



(Critical Reading)


• Here's Why:

You can rewrite AC as AB + BC , AD as AB + BC + CD, CE as CD + DE , and BD as BC + CD, and then consider the five answer choices.

The first answer choice is equivalent to AB + BC is less than CD. You know that AB is less than CD and that BC is also less than CD, but the sum of AB and BC might not be less than CD. Since the question asks which statement must be true,the first answer choice is not the correct answer.

The second answer choice is equivalent to AB + BC is less than CD + DE . Thisstatement must be true, because AB is less than CD and BC is less than DE .



Although there is no need to consider the other answer choices once you see thatthe second answer choice must be true, each of the remaining choices could berewritten in the same way and you could see that they need not be true.


•

Question Type: Standard Multiple Choice

(Mathematics)


• Here's Why:

The error in this sentence occurs at (A), where awkward phrasing and an

unnecessary pronoun create a comma splice. The entire phrase “It depends on”can be reduced to “Depending on.”


(Writing)


•

Here's Why:

The word “yet” sets up a contrast between the singer’s ability to sound “lyrical,”or enthusiastic, when singing about joy and “poignant,” or touching, when singingof sadness.



(Critical Reading)


• Here's Why:

The graphs of all the given functions are lines, and the equations are all in theform y = mx + b. When a linear equation is in the form y = mx + b, the slope of the



graph of the equation is m, the coefficient of x. The graph of the function ƒ is aline with slope 2, so the only choice that could be the equation of ƒ is ƒ( x) = 2 x +4.


•

Question Type: Standard Multiple Choice

(Mathematics)


• Here's Why:

Choice (B) is correct. It avoids the comma-splice error of the original by

removing the unnecessary words “it has” so that “India” is properly modified bywhat follows the comma (“the world’s most populous democracy”).


(Writing)


•

Here's Why:

Choice (B) is correct. It makes sense to say that despite his “limited”—butapparently applicable—experience, the hiring manager feels that David is“qualified for” the job, or competent to undertake it.


(Critical Reading)


• Here's Why:

Choice (C) is correct. It avoids the error of the original by using the pronoun “his”to indicate that the “controversial paintings” discussed in the sentence were produced by de Kooning.




(Writing)


• Here's Why:

Squaring both sides of the equation = gives the equation x – a = x + b.Subtracting x from both sides now gives – a = b, or a + b = 0.



(Mathematics)


• Here's Why:

Choice (A) is correct. With money scarce, many people had stopped going tomovies since the “advent,” or beginning, of the Depression in the 1930s. It islogical to assume that theater owners would come up with a scheme to “lure,” or

entice, these people back into the theater with the promise of a good bargain —“two films for the price of one.”


(Critical Reading)


• Here's Why:

The error in this sentence occurs at (A), where there is awkward and wordy phrasing. The awkward “Long been” should simply be “Long” (“Longisolated...”).




(Writing)


• Here's Why:

Only “bigot . . . loath” logically completes the sentence. Someone who is not bigoted, or prejudiced, would not be “loath,” or unwilling, to accept someone withdifferent opinions.



(Critical Reading)


• Here's Why:

Let n stand for the number of students who belong to both clubs. The 15 membersof the math club can be broken down into two groups: those who are in both clubs(there are n students in this category) and those who are in the math club only(there are 15 – n students in this category).

The 12 members of the chess club can also be broken down into two groups: n students who are in both clubs and 12 – n students who are in the chess club only.

Since a total of 13 students belong to only one of the two clubs, you know that (15 – n) + (12 – n) = 13. Solving this equation gives n = 7, so 7 students belong to both clubs.



(Mathematics)


• Here's Why:



The error in this sentence occurs at (D), where there is illogical pronoun use. Itdoesn’t make sense to say that schools competed against “them” when “them”could refer to “high schools,” “schools,” or even “students.” Instead, “oneanother” or “each other” is needed.

•

Question Type: Identifying Sentence Errors

(Writing)


• Here's Why:

Burgess believes that preaching or sermonizing is not appropriate in good fiction.



(Critical Reading)


• Here's Why:

The ladder, the wall, and the ground form a right triangle with a 25-foothypotenuse. At first, the bottom of the ladder is 7 feet from the base of the building, so one leg of the right triangle measures 7 feet; the length of the other leg, x, can be found by solving 72 + x2 = 252, which is the Pythagorean theorem.From this, you can figure out that the other leg measures 24 feet.

After the ladder slips down 4 feet, the 24-foot leg of the right triangle becomes 20feet long. The other leg then has to be 15 feet long. This length is found bysolving 202 + y2 = 252, which is again the Pythagorean theorem.

Since the distance between the bottom of the ladder and the base of the buildingincreases from 7 feet to 15 feet, the amount that the bottom of the ladder slidesout is 8 feet.

• Difficulty: Hard


(Mathematics)




• Here's Why:

The error in this sentence occurs at (A), where there is subject-verb disagreement.

The singular verb “is” does not agree with the plural subject “Ballet, moderndance, and Indian classical dance.” The plural verb “are” should be used instead.In addition, the singular noun “form” should be changed to the plural noun“forms.”


(Writing)


• Here's Why:

The market “seems” to have been opened long ago, but the term “Although”indicates that it was not. The market must have opened “recently.”



(Critical Reading)


• Here's Why:

The marked angles in the figure are angles P , Q, R, and S , which are the angles of a quadrilateral, and angles T , U , and V , which are the angles of a triangle. Thesum of the degree measures of the angles of a quadrilateral is 360, and the sum of the degree measures of the angles of a triangle is 180. Therefore, the sum of the

degree measures of the marked angles is 360 plus 180, which is 540.



(Mathematics)




• Here's Why:

Choice (C) is correct. It avoids the sentence fragment error of the original by

providing a main verb, “was,” for the subject of the sentence, “the BrooklynBridge.”


(Writing)


•

Here's Why:

Choice (C) is correct. It avoids the error of the original by removing theunnecessary pronoun “their” and by using concise phrasing to indicate that the pilots were the ones who “vowed to use legal means to fight such a move.”


(Writing)

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