SAT math essentials part 4 ppsx

... only. Example ᎏ 4 9 ᎏ Ϫ ᎏ 1 6 ᎏ LCD is 54 because 9 ϫ 6 ϭ 54 and 6 ϫ 9 ϭ 54. ᎏ 4 9 ᎏ ϭ 4 ϫ ᎏ 6 9 ᎏ ϫ 6 ϭ ᎏ 2 5 4 4 ᎏ Convert fraction. ᎏ 1 6 ᎏ ϭ 1 ϫ ᎏ 9 6 ᎏ ϫ 9 ϭ ᎏ 5 9 4 ᎏ Convert fraction. ᎏ 2 5 4 4 ᎏ Ϫ ᎏ 5 9 4 ᎏ ϭ ᎏ 1 5 5 4 ᎏ ϭ ᎏ 1 5 8 ᎏ Subtract ... Multiplication k  a 1 a 2 a 3 a 4  =  ka 1 ka 2 ka 3 ka 4   a 1 a 2 a 3 a 4  ×  b 1 b 2 b 3 b 4  =  a 1 b...

Ngày tải lên: 22/07/2014, 10:22

... 2 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • 9...

Ngày tải lên: 22/07/2014, 10:22

... stares at his glass eye for hours while in a seething rage. a. 3, 7, 4, 5, 6 b. 3, 4, 6, 5, 7 c. 5, 4, 6, 7, 3 d. 3, 5, 4, 6, 7 e. 3, 4, 5, 7, 6  Commit To Memory Here are the most important lessons ... ques- tion. Here are a couple of examples: 24. In the context of the essay, which of the following revisions of sentence 14 more effectively con- cludes the essay? ( 14) As Poe creates...

Ngày tải lên: 22/07/2014, 10:22

... y = x 2 – 4. Therefore, the equation of a parabola with its vertex at (5, 4) is y = ( x – 5) 2 – 4. 4. d. If b 3 = – 64, then, taking the cube root of both sides, b = 4. Substitute 4 for b in ... speed: 5(30s) = (40 ) (45 ), 150s = 1,800, s = 12. Warrick drives 12 mph. 2͙180 ෆ ᎏ a –PRACTICE TEST 3– 243 10. 1,0 14 Of the concert attendees, 41 % were between the ages of 18– 24 and...

Ngày tải lên: 22/07/2014, 10:22

... 8. b. 4 or 4. c. 4 or –8. d. 4 or –8. e. 4 or 8. 5. The expression ᎏ x 3 + x 2 x – 2 – 16 20x ᎏ can be reduced to a. ᎏ x + 4 5 ᎏ . b. ᎏ x + x 4 ᎏ . c. ᎏ x x + + 4 5 ᎏ . d. ᎏ x x 2 + + 5 4 x ᎏ . e. ... 2 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • 1 2 3 4 5 6 7 8 9 • 1 2 3 4 5 6 7 8 9 0 • / 1 2 3 4 5 6 7 8 9 0 • / 1 2...

Ngày tải lên: 22/07/2014, 10:22

... ϭ 4, and z ϭ 2. ᎏ 8 ϩ 4 8 ϩ 2 ᎏ ϩ ᎏ 8 ϩ 4 4 ϩ 2 ᎏ ϩ ᎏ 8 ϩ 4 2 ϩ 2 ᎏ ᎏ 1 8 4 ᎏ ϩ ᎏ 1 4 4 ᎏ ϩ ᎏ 1 2 4 ᎏ LCD is 8. ᎏ 1 8 4 ᎏ ϩ ᎏ 2 8 8 ᎏ ϩ ᎏ 5 8 6 ᎏ Add. ᎏ 9 8 8 ᎏ Simplify. ᎏ 4 4 9 ᎏ Answer: ᎏ 4 4 9 ᎏ 8 24 x zy –PROBLEM ... there are 6 parts red paint, 4 parts green paint, and 2 parts yellow paint. Now we must first determine how many total parts there are in the ratio: 6...

Ngày tải lên: 22/07/2014, 10:22

... ϩ 23) 2 ϭ 5y Ϫ 4 b. y 2 ϩ 23 ϭ 5y Ϫ 4 c. y 2 ϩ (23) 2 ϭ y (4 Ϫ 5) d. y 2 ϩ (23) 2 ϭ 5y Ϫ 4 e. (y ϩ 23) 2 ϭ y (4 Ϫ 5) Answer a. Break the problem into pieces while translating into mathematics: squaring ... coordinates of each point and then add them: A (2, 4) : 2 ϩ ( 4) ϭϪ2 B (Ϫ1,1): Ϫ1 ϩ 1 ϭ 0 C (Ϫ2, 4) : Ϫ2 ϩ ( 4) ϭϪ6 D (3,Ϫ2): 3 ϩ (Ϫ2) ϭ 1 E (4, 3): 4 ϩ 3 ϭ 7 Point D is the point...

Ngày tải lên: 22/07/2014, 10:22

... multiple of 3 :4: 5). Therefore, c must equal 80 because 60:80:100 is the same ratio as 6:8:10. 45 -45 -90 Right Triangles An isosceles right triangle is a right triangle with two angles each measuring 45 °. Special ... triangles: ■ the length of the hypotenuse ϭ ͙2 ෆ ϫ the length of a leg of the triangle 45 ° 45 ° x x xΊ2 45 ° 45 ° 60 100 c –GEOMETRY REVIEW– 115 Triangle Trigonometry...

Ngày tải lên: 22/07/2014, 10:22

... Pythagorean triples: 3 :4: 5 3 2 + 4 2 = 5 2 6:8:10 6 2 + 8 2 = 10 2 5:12:13 5 2 + 12 2 = 13 2 7: 24: 25 7 2 + 24 2 = 25 2 8:15:17 8 2 + 15 2 = 17 2 810 ? 35 a 4 –GEOMETRY REVIEW– 1 14 Classifying Angles Angles ... ͙c 2 ෆ 5 ϭ c Example a 2 ϩ b 2 ϭ c 2 a 2 ϩ 6 2 ϭ 12 2 a 2 ϩ 36 ϭ 144 a 2 ϩ 36 Ϫ 36 ϭ 144 Ϫ 36 a 2 ϭ 108 ͙a 2 ෆ ϭ ͙108 ෆ a ϭ ͙108 ෆ a 12 6 4 c 3 –GEOMETRY REVIEW– 112 Types...

Ngày tải lên: 22/07/2014, 10:22