New SAT Math Workbook Episode 2 part 7 doc

... (2, 0): yxb b b = () +=− = − + = − − 02 20 1 02 2 (slope ) The equation for the line is y = –x + 2. For the pairs ( 2, –1) and (2, 1): yxb b b = () += =+ = −− −− 11 22 1 2 1 2 12 0 () () ) () (slope The equation ... Applying the function sin45° = 2 2 , set the value of this function equal to 5 x opposite hypotenuse       , then solve for x: 2 2 ;2 ;===== 5 10 10 2 10...

Ngày tải lên: 22/07/2014, 11:20

... coordinates. 62 2 26 2 44 ++ ,,       = () 2. (C) O is the midpoint of AB. x xx y yy + + + + 4 2 2440 6 2 1 624 === === , , − A is the point (0, –4). 3. (A) d = ()() = === 84 63 4 3 16 9 25 5 22 22 − ... 10 (A) b < 3 2 (B) b > 3 2 (C) b <− 3 2 (D) b < 2 3 (E) b > 2 3 7. If x 2 < 4, then (A) x > 2 (B) x < 2 (C) x > 2 (D) 2 <...

Ngày tải lên: 22/07/2014, 11:20

... B 19. C 20 . E 21 . D 22 . B 23 . C 24 . E 25 . A 26 . D 27 . C 28 . B 29 . D 30. C 31. D 32. A 33. C 34. A 35. E 36. B 37. D 38. C 39. C 40. A 41. D 42. B 43. A 44. E 45. B 46. A 47. C 48. B 49. E 50. ... O A O B O C O D O E 21 O A O B O C O D O E 22 O A O B O C O D O E 23 O A O B O C O D O E 24 O A O B O C O D O E 25 O A O B O C O D O E 26 O A O B O C O D O E 27 O A O...

Ngày tải lên: 22/07/2014, 11:20

... = 1 2 420 21 0(. ) $.= 23 . (A) 3 45 12 5 7 5 67 30 7 23 72 3 30             == == += − − 24 . (C) If the linear ratio is 1:1.5, then the area ratio is (1) 2 : (1.5) 2 or 1 :2. 25. The ... 3 Added 4 0 0 New 10 3 6. 10 gallons is 2 3 1 4 − of the tank. 2 3 1 4 83 12 5 12 5 12 10 5 120 24 − − == = = = x x x (answer) 7. xy x xyy xy xy xy −− − ()...

Ngày tải lên: 22/07/2014, 11:20

... origin? (A) 2 (B) 2. 5 (C) 42 (D) 43 (E) 5 16. The product of 3456 and 78 9 is exactly (A) 27 2 678 7 (B) 27 2 678 5 (C) 27 2 678 1 (D) 27 2 678 4 (E) 27 2 678 6 17. Susan got up one morning at 7: 42 A.M. and went ... x yields the equation y x = − + 2 4 2 : f xx x x − () = − () − () +=− ()       += − + 2 2 2 22 4 2 2 8 2 2 2 2 ,, o r − + x 2 4 2 The grap...

Ngày tải lên: 22/07/2014, 11:20

... value increased by 50% (or 1 2 ) per year on average, r = 1.5 = 3 2 . Solving for a: a a a a × () = × () = ×= = − 3 2 2 70 0 3 2 2 70 0 27 8 2 70 0 41 3 () , , , 22 70 0 8 27 800 , × =a At an increase ... f(x): g(f(x)) = x 2 + 3 5. (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 ·...

Ngày tải lên: 22/07/2014, 11:20

... x 2 + 3x – 4, then f (2 + a) = (A) a 2 + 7a + 6 (B) 2a 2 – 7a – 12 (C) a 2 + 12a + 3 (D) 6a 2 + 3a + 7 (E) a 2 – a + 6 4. If f(x) = x 2 and g(x) = x + 3, then g(f(x)) = (A) x + 3 (B) x 2 ... − = − = − − 22 5 2 5 2 25 2 2 f ()()( )− = − = − = − − 115 1 5 1 5 1 1 f(0) = (0)(5 0 ) = (0)(1) = 0 f (2) = (2) (5 2 ) = (2) (25 ) = 50 The range of f(x) = x x 5 − is the s...

Ngày tải lên: 22/07/2014, 11:20

... square = s 2 = 36 Therefore, s = 6 and perimeter = 24 Geometry 20 5 www.petersons.com 3. RIGHT TRIANGLES A. Pythagorean theorem (leg) 2 + (leg) 2 = (hypotenuse) 2 52 25 4 29 29 22 2 2 2 () () = = = = + + x x x x B. ... = 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 mi...

Ngày tải lên: 22/07/2014, 11:20

... 50 1500 10 xx xx x () ( ) = = + + − − − 2. (B) No. of Price per Total Pounds · Pound = Value x 70 70 x 30 90 27 00 x + 30 85 85(x + 30) 70 27 00 85 30 70 27 00 85 25 50 150 15 xx xx x x ++ ++ = () = = = ... x ++ + ++ ++ 24 4 22 416 14 2 72 5 4 = () = = == − −−,,==−3 2. (B) Represent the first two sides as 4x and 3x, then the third side is 7x – 20 . 476 4 14 20 64 14 84 6 xx...

Ngày tải lên: 22/07/2014, 11:20

... their squares is 120 ? (A) (n + 1) 2 – n 2 = 120 (B) n 2 – (n + 1) 2 = 120 (C) n 2 – (n + 2) 2 = 120 (D) (n + 2) 2 – n 2 = 120 (E) [(n + 2) – n] 2 = 120 3. Find the average of four consecutive ... a b 4. (D) 4 3 2 2 2 abc d ab ⋅ Divide 2, a, and b. 2 36 22 c d a cd a ⋅= 5. (A) 3 4 1 6 24 22 ac bac ⋅ Divide 3, a, and c 2 . ac b ac b 2 2 2 2 4 1...

Ngày tải lên: 22/07/2014, 11:20