New SAT Math Workbook Episode 2 part 8 pps

... 0 0 New 10 36. 10 gallons is 2 314− of the tank. 2 314 83 12 5 12 5 12 105 120 24 −−=====xxx(answer)7.xy x xyyxyxyxy−−−()==== 2 22 240 60 2 220 10+(answer) 8. ... 1 2 + 1 2 = r 2 2 = r 2 Area = πr 2 = 2 10. (E) Angle BCA = Angle BAC = 80 °There are 20 ° left for angle B.11. (B)9 2 81 8 9 2 8 8149÷=⋅ = 12. (D)13103313.==13. (E)1650 32= 32 100= ... remainder when divided by 2. If divisionby 4 does give a remainder, it must be 2, sinceeven numbers are 2 apart. 2 (answer)3. 88 2 ()= (answer)4.yx==⋅ = 2 55 2 25 2 54 25 (answer)5. Illustrate...

... + 8. 5 + 1.9) +(1.7 + 4.9 + 2. 2) = 22 .8. The number of these units that were standard models = (8. 5 + 4.9) = 13.4.To answer the question, divide 13.4 by 22 .8 (round off the quotient): 22 .8 ÷ ... (2, 0):yxbbb=()+=−= − +=−− 02 201 02 2(slope )The equation for the line is y = –x + 2. For the pairs ( 2, –1) and (2, 1):yxbbb=()+==+=−−−−11 22 1 2 1 2 12 0()())()(slopeThe equation ... Applying the function sin45° = 2 2, set the value of this function equal to5xoppositehypotenuse, then solve for x: 2 2 ;2 ;=====51010 2 10 2 2 52 xxx. 2. (D) Since the figure...

... pairs: 48 000 48 0001 48 000 12 000 48 000 2 4 2 2,,(),,,()==== 88 0004 12 0003 000 48 0004 48 0001630 2 ,,,,(),,====000Retest1. The correct answer is 4 32. First, find r: 27 2 27 236631 2 2×=×===−rrrr()To ... f(x):g(f(x)) = x 2 + 35. (D) f(x 2 ) = x 2 2, and fx()() 2 = x 2 2().Accordingly, f(x 2 ) ÷ fx()() 2 = x 2 2 ÷ x 2 2() =x 2 2 · 4 2 x = 2. Exercise 61. (B) To determine ... increased by50% (or 1 2 ) per year on average, r = 1.5 = 3 2 .Solving for a:aaaa×()=×()=×==−3 2 2 7003 2 2 700 27 8 2 700413(),,, 22 700 8 27 80 0, ×=aAt an increase...

... equations does thegraph best represent?(A) x = (y – 2) 2 – 2 (B) x = (y + 2) 2 – 2 (C) x = –(y – 2) 2 – 2 (D) y = (x – 2) 2 + 2 (E) y = (x – 2) 2 – 2 3. In the xy-plane, which of the following ... geometric sequence are 2 and 20 48, respectively. To find the value of the fourthterm, first apply the standard equation to determine r :Solution: 2 20 48 2 20 48 20 48 2 1 024 1 024 61555×=×====−rrrrr()554r ... − =−= −− 22 5 2 5 2 25 2 2f ()()( )− = − =−= −−115151511f(0) = (0)(50) = (0)(1) = 0f (2) = (2) (5 2 ) = (2) (25 ) = 50The range of f(x) = xx5− is the set {− 2 25, −15,0,...

... coordinates. 62 2 26 2 44++,,=() 2. (C) O is the midpoint of AB.xxxyyy++++4 2 24406 2 1 624 ======,, −A is the point (0, –4).3. (A)d =()()==== 84 63 4 316 9 25 5 22 22 − ... >3 2 (C)b <−3 2 (D)b < 2 3(E)b > 2 37. If x 2 < 4, then(A) x > 2 (B) x < 2 (C) x > 2 (D) 2 < x < 2 (E) 2 ≤ x ≤ 2 8. Solve for n: n + 4.3 < 2. 7(A) n > ... angle = 54051 08= °. 8. (D)An angle outside the circle is 1 2 the differenceof its intercepted arcs.401 2 20 80 20 100===()xxx−−9. (D) V = l · w · h = 2 · 6 · 18 = 21 6The volume...

... square = s 2 = 36Therefore, s = 6 and perimeter = 24 Geometry 20 5www.petersons.com3. RIGHT TRIANGLESA. Pythagorean theorem(leg) 2 + (leg) 2 = (hypotenuse) 2 52 25 4 29 29 22 2 2 2 () ()====++xxxxB. ... =xx yy 21 2 21 2 − +()()-The distance between (–3, 2) and (5, –1) is−− ++3+935 8 64 73 2 2 22 ()=() ()= =2- -1 -B. The midpoint of a line segment =xxyy 121 2 22 ++,Since ... =()()=()=1 2 461 2 24 12 22 xx x x5. (C)radius of circle = 3Area = πr 2 = 9πExercise 2 1. (A) Area of equilateral triangle = s 2 43Therefore, s 2 4 must equal 16s 2 = 64s = 8 Perimeter...

... in cents10 400 25 25 + - 0015 15010 xx==4. (D) No of Percent Amount ofQuarts · Alcohol = AlcoholOriginal 18 32 576Added x 0 0 New 18 + x 12 216 + 12x576 21 6 12 360 12 30===+ xxx5. ... 31 2 hours.3.5x + 3.5(x + 6) = 28 7Multiply by 10 to eliminate decimals.35 35 6 28 7035 35 21 0 28 7070 26 603xxxxxx++++()==== 88 The rate of the faster car was x + 6 or 44 m.p.h. 2. ... take twice as long, or 2x hours, to mowthe lawn.Mr. Powell Mike 20 x+ 20 2x=1Multiply by 2x to clear fractions.40 20 2 60 2 30+ ===xxx minutesChapter 12 188 www.petersons.com9....