16.03.2017 Views

12.Practice.Tests.for.the.SAT_2015-2016_1128p

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

12 Practice <strong>Tests</strong> <strong>for</strong> <strong>the</strong> <strong>SAT</strong><br />

Practice Test Eleven Answers and Explanations I<br />

999<br />

time-consuming. Many <strong>SAT</strong> problems can be done in both<br />

a time-consuming manner and a faster way. Try to find parts<br />

of <strong>the</strong> problem that cancel out to save yourself time and<br />

ef<strong>for</strong>t.<br />

29! =<br />

29 x 28 x 27! = 29 x 28 = 812<br />

27! 27!<br />

16. 30<br />

Difficulty: Medium<br />

Strategic Advice: Many of <strong>the</strong> more difficult geometry<br />

questions on <strong>the</strong> <strong>SAT</strong> can be simplified by noticing<br />

relationships between different parts of <strong>the</strong> diagram. In this<br />

case, knowing <strong>the</strong> relationship between <strong>the</strong> area of <strong>the</strong><br />

shaded sector and <strong>the</strong> area of <strong>the</strong> circle as a whole gives us<br />

<strong>the</strong> measure of <strong>the</strong> angle between AD and CF. This in turn<br />

gives us <strong>the</strong> measure of q.<br />

Since <strong>the</strong> shaded area is t <strong>the</strong> area of <strong>the</strong> circle, <strong>the</strong> angle<br />

between AD and CF is t of 360 degrees, or 60 degrees.<br />

The angles along CF add up to 1 80 degrees, so 60 + 90 +<br />

q = 180 and q = 30.<br />

17. 6<br />

Difficulty: Medium<br />

Strategic Advice: The median of a set of numbers is <strong>the</strong><br />

number in <strong>the</strong> middle when <strong>the</strong> numbers are arranged in<br />

·<br />

increasing order.<br />

Getting to <strong>the</strong> Answer:<br />

These numbers should be in <strong>the</strong> order tx, 3x, and Sx.<br />

The median is 3x.<br />

3x = 18<br />

x=6<br />

18. 210<br />

Difficulty: Medium<br />

Strategic Advice: You probably already know that <strong>the</strong><br />

interior angles of a triangle add up to 1 80 degrees and that<br />

<strong>the</strong> angles around a given point add up to 360 degrees.<br />

You can use <strong>the</strong>se two pieces of in<strong>for</strong>mation to find <strong>the</strong><br />

sum of <strong>the</strong> interior angles of any convex multisided figure.<br />

You can also memorize <strong>the</strong> <strong>for</strong>mula derived from <strong>the</strong><br />

approach outlined, which is l 80n - 360 =sum of interior<br />

angles, where n is <strong>the</strong> number of sides. Once you have<br />

found <strong>the</strong> sum of <strong>the</strong> interior angles of this figure, you need<br />

only subtract <strong>the</strong> known angles to find <strong>the</strong> sum of a and b.<br />

Getting to <strong>the</strong> Answer:<br />

First, divide <strong>the</strong> figure into a number of triangles that meet<br />

at a centra I point:<br />

The sum of <strong>the</strong> interior angles of each triangle is 180<br />

degrees. The angles around <strong>the</strong> central point (marked by<br />

<strong>the</strong> small circle) add up to 360 degrees. There<strong>for</strong>e, <strong>the</strong> total<br />

sum of <strong>the</strong> interior angles of <strong>the</strong> six-sided polygon is<br />

1 80(6) - 360 = 720<br />

720 - (150 + 120 + 140 + 100) = 210<br />

SECTION 7<br />

1. D<br />

Difficulty: Low<br />

The word in <strong>the</strong> first blank has to be similar in meaning<br />

to controversy: (C) belligerent, (D) scandalous, and<br />

(E) provocative would fit. The band wouldn't do this if <strong>the</strong>y<br />

didn't find that <strong>the</strong> strategy worked, so (B), rewarding, and<br />

(D), effective, fit <strong>for</strong> <strong>the</strong> second blank. Only (D) fits <strong>for</strong> both<br />

blanks.<br />

2. B<br />

Difficulty: Low<br />

The correct answer is implied by numerous scribbled edits<br />

that cover even his supposed final drafts. In o<strong>the</strong>r words,<br />

Joyce attached great importance to (B), revision.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!