Idiot\'s Guides Basic Math and Pre-Algebra

Check Point Answers 309 y - 46 x 15 y-intercept: (0,6) slope: -4 y 52 - 34 x y-intercept: (0,-4) slope: -3 -6 -2 062 -2 2 4 ...

310 Appendix A y = -3 x = 2 -6 -2 062 -2 2 4 6 -4 -6 -8-9 -7 -5-4 -1-3 134 5 789 -8 -9 -1 -3 -5 -7 8 9 1 3 5 7 -10 10 -10 10 y ...

Check Point Answers 311 y + 1 = 4 y u 12 x +1 -6 -2 062 -2 2 4 6 -4 -6 -8-9 -7 -5-4 -1-3 134 5 789 -8 -9 -1 -3 -5 -7 8 9 1 3 5 ...

312 Appendix A y < x y e -^2 3 x + 5 -6 -2 062 -2 2 4 6 -4 -6 -8-9 -7 -5-4 -1-3 134 5 789 -8 -9 -1 -3 -5 -7 8 9 1 3 5 7 -10 ...

Check Point Answers 313 If m’X = 174r, then ’X is a(n) obtuse angle. If m’T = 38r, then ’T is a(n) acute angle. If ’X and ...

314 Appendix A False: If m’P = 17r and m’Q = 25r, m’R = 180r – (17r + 25r) = 138r. 'PQR is an obtuse triangle, not an acute tr ...

Check Point Answers 315 The area of a right triangle with legs of 3 cm and 4 cm and hypotenuse of 5 cm is 6 square centimeters. ...

316 Appendix A In trapezoid FIVE, IV FE and m’F = 59r. m’I = 121r In trapezoid TEAR, EA TR and TE = AR. If ’E = 107r, m’A = 107 ...

Check Point Answers 317 The area of an octagon with a perimeter of 40 inches and an apothem of 5 inches is A^1 ap 2 1 2  5 ...

318 Appendix A m’GAL = 56 82 2   69  and m’PAL = 180 – 69 = 111. m’APE =^1 2 220 140^1 2   80 40  m’FAT =^1 2 52 12^ ...

Check Point Answers 319 Chapter 16 SA = 2(15 v 24) + 2(15 v 10) + 2(24 v 10) = 1,500 cm^2 SA = 2( 1 2 v^5 v 12) + 5(8 + 12 + 13 ...

320 Appendix A d = 6 feet, r = 3 feet, V^4 3 55 π?? 333 6 π^ cubic feet V = 4500S cm^3 , r = 15 cm Chapter 17 Shaded area = a ...

Check Point Answers 321 'DEF~'CAT, DE = 65 in, EF = 45 in, CA = 13 in. Find AT. 'MNO~'LEG, MN = x – 3, NO = 3, EG = 21, LE = 2x ...

322 Appendix A The number of combinations of 5 things taken 2 at a time = 10. The number of different committees of 5 people th ...

Check Point Answers 323 A rea of Queens z area of Manhattan = 109 z 23 } 4.7. Queens is between 4 and 5 times the size of Manha ...

324 Appendix A The mode of {2, 2, 2, 3, 3, 4, 4, 4, 4} is 4. B = {34, 54, 78, 92, 101} has no mode. The mode of {3, 4, 5, 4, 7, ...

Check Point Answers 325 20. The range of {34, 54, 78, 92, 101} is 101 – 34 = 67. The range of {3, 4, 5, 4, 7, 8, 9, 2, 10, 1} i ...

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APPENDIX B Extra Practice Answers Part I: Arithmetic You used the number 8,472,019 to answer questions 1–5. 0 is in the hundred ...

328 Appendix B 15 gallons of chili 66 yards of solid fabric 8.1 is 18% of 45. Thirty-three is 30% of 110. 38 is 16% of 237.5. 2 ...