Problem 1E: Exer. 12: If x0 and y0, determine the sign of the real number. 1 . (a) xy(b) x2y (c) xy+x (d) yx Problem 2E Problem 3E: Exer. 36: Replace the symbol with cither ,, or = to make the resulting statement true. 3. (a) 74... Problem 4E: Exer. 36: Replace the symbol with cither ,, or = to make the resulting statement true. 4. (a) 35... Problem 5E: Free. 36 . Replace the symbol with cither ,, or = to make the resulting statement true. 5. (a)... Problem 6E: Exer.3-6: Replace the symbol with cither ,, or = to make the resulting statement true. 6. (a)... Problem 7E: Exer. 78: Express the statement as an inequality. 7. (a) x is negative. (b) y is nonncgative. (c) q... Problem 8E: Exer. 78: Express the statement as an inequality. 8. (a) b is positive. (b) s is nonpositive. (c) w... Problem 9E: Exer. 914 : Rewrite the number without using the absolute value symbol, and simplify the result. 9.... Problem 10E: Exer. 914: Rewrite the number without using the absolute value symbol, and simplify the result. 10.... Problem 11E Problem 12E Problem 13E: Fxer. 914: Rewrite the number without using the absolute value symbol, and simplify the result. 13.... Problem 14E: Exer. 914: Rewrite the number without using the absolute value symbol, and simplify the result. 14.... Problem 15E: Exer. 1518: The given numbers are coordinates of points A, B, and C, respectively, on a coordinate... Problem 16E: Exer. 1518 . The given numbers are coordinates of points A, B, and C , respectively, on a coordinate... Problem 17E: Exer. 1518 . The given numbers are coordinates of points A, B, and C, respectively, on a coordinate... Problem 18E: Exer. 1518 . The given numbers are coordinates of points A, B, and C, respectively, on a coordinate... Problem 19E: Exer. 1924 . The two given numbers are coordinates of points A and B , respectively, on a coordinate... Problem 20E: Exer. 1924: The two given numbers are coordinates of points A and B , respectively, on a coordinate... Problem 21E: Exer. 19-24. The two given numbers are coordinates of points A and B, respectively, on a coordinate... Problem 22E: Exer. 1924 : The two piven numbers are coordinates of points A and B , respectively, on a coordinate... Problem 23E: Exer. 1924 : The two given numbers are coordinates of points A and B , respectively, on a coordinate... Problem 24E: Exer. 1924 : The two given numbers are coordinates of points A and B , respectively, on a coordinate... Problem 25E: Exer. 2532: Rewrite the expression without using the absolute value symbol, and simplify the result.... Problem 26E: Exer. 2532: Rewrite the expression without using the absolute value symbol, and simplify the result.... Problem 27E: Exer. 2532: Rewrite the expression without using the absolute value symbol, and simplify the result.... Problem 28E: Exer. 2532 . Rewrite the expression without using the absolute value symbol, and simplify the... Problem 29E: Exer. 2532: Rewrite the expression without using the absolute value symbol, and simplify the result.... Problem 30E: Exer. 2532: Rewrite the expression without using the absolute value symbol, and simplify the result.... Problem 31E: Exer. 2532 : Rewrite the expression without using the absolute value symbol, and simplify the... Problem 32E: Exer. 2532 . Rewrite the expression without using the absolute value symbol, and simplify the... Problem 33E: Exer. 3340: Replace the symbol with cither = or to make the resulting statement true for all real... Problem 34E: Exer. 3340: Replace the symbol with cither = or to make the resulting statement true for all real... Problem 35E: Exer. 3340: Replace the symbol with cither = or to make the resulting statement true for all real... Problem 36E: Exer. 3340: Replace the symbol with cither = or to make the resulting statement true for all real... Problem 37E: Exer. 3340 : Replace the symbol with cither = or to make the resulting statement true for all real... Problem 38E: Exer. 3340= Replace the symbol with either = or to make the resulting statement true for all real... Problem 39E: Exer. 3340: Replace the symbol with cither = or to make the resulting statement true for all real... Problem 40E: Exer. 3340: Replace the symbol with either = or to make the resulting statement true for all real... Problem 41E: Exer. 4142 . Approximate the real-number expression to four decimal places. 41. (a) |3.223.15| (b)... Problem 42E: Exer. 4142 . Approximate the real-number expression to four decimal places. 42. (a)... Problem 43E: Exer. 4344 : Approximate the real-number expression. Ex. press the answer in scientific notation... Problem 44E: Exer. 4344 : Approximate the real-number expression. Ex-press the answer in scientific notation... Problem 45E: The point on a coordinate line corresponding to 2 may be determined by constructing a right triangle... Problem 46E Problem 47E: Geometric proofs of properties of real numbers were first given by the ancient Greeks. In order to... Problem 48E: Rational approximations to square roots can be found using a formula discovered by the ancient... Problem 49E: Exer. 4950 . Express the number in scientific form. 49. (a) 427,000 (b) 0.000000098 (c) 810,000,000 Problem 50E: Exer. 4950 : Express the number in scientific form. 50. (a) 85.200 (b) 0.0000055 (c) 24,900,000 Problem 51E: Exer. 5152: Express the number in decimal form. 51. (a) 8.3103 (b) 2.91012 (c) 5.63108 Problem 52E: Exer. 5152 . Express the number in decimal form. 52. (a) 2.3107 (b) 7.01109 (c) 1.231010 Problem 53E: Mass of a tydrogen atom The mass of a hydrogen atom is approximately 0.0000000000000000000000017gram... Problem 54E: Mass of an electron The mass of an electron is approximately 9.11031 kilogram. Express this number... Problem 55E: Light year In astronomy, distances to stars are measured in light years. One light year is the... Problem 56E Problem 57E: Avogadro's number The number of hydrogen atoms in a mole is Avogadro's number, 6.02102. If one mole... Problem 58E: Fish population The population dynamics of many fish are characterized by extremely high fertility... Problem 59E: Frames in a movie film One of the longest movies ever made is a 1970 British film that runs for 48... Problem 60E: Large prime numbers The number 244971 is prime. At the time that this number was determined to be... Problem 61E: Tornado pressure when a tornado passes near a building, there is a rapid drop in the outdoor... Problem 62E: Cattle population A rancher has 750 head of cattle consisting of 400 adults (aged 2 or more years),... format_list_bulleted