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All Textbook Solutions for Elementary Technical Mathematics

How many acres are in a rectangular field that measures 820 yd by 440 yd?How many hectares are in the field in Exercise 39?42EA house lot measures 145 ft by 186 ft. What part of an acre is the lot?How many acres are in 14mi2?45EHow many acres are in 520 square rods?A corn yield of 10,550 kg/ha is equivalent to how many ib/acre? To how many bu/acre? (One bu of corn weighs 56 lb.)A soybean yield of 45 by/acre is equivalent to how many kg/ha? To how many metric tons/hectare? (One bu of soybeans weighs 60 lb.)How many acres are in eight 30-in. rows 440 yards long?a. How many rows 30 in. apart can be planted in a rectangular field 3300 ft long and 2600 ft wide? The rows run lengthwise b. Suppose seed corn is planted at 20 lb/acre. How many bushel of seed corn will be needed to plant the field? c. Suppose 1 lb of seed corn contains 1200 kernels. How many bags, each congaing 80,000 kernels, will be needed?For Octoberfest, a vender purchased 15 kg of German brats. How many 6-oz brats can be made from the 15 kg of German brats?52EChange25.6kg/cm2tolb/in2.54E55EChange415lb/ft3tog/cm3.Give the number of significant digits (the accuracy) of each measurement: 4.06 kgGive the number of significant digits (the accuracy) of each measurement: 24,000 mi3R4R5R6R7R8RFind a. the precision and b. and greatest possible error of each measurement: 6.05 m10R11R12R13R14R15R16RRead the measurement shown on the vernier caliper is Illustration 1 in the following units: Metric units ILLUSTRATION 118R19RRead the measurement shown on the U.S. micrometer in Illustration 3. ILLUSTRATION 3Find the measurement that is a. the most accurate and b. the most precise: 2500V;36,500V;60,000V;9.6V;120V22R23R24R25R26R27R28R29R30R31R32R33RFor each resistor find its resistance and its tolerance written as a percent:35R36RGive the number of significant digits in each measurement: 1.806 gGive the number of significant digits in each measurement: 7.00 L3TFind a. the precision and b. the greatest possible error of each measurement: 6.13 mm5TFind a. the precision and b. the greatest possible error of each measurement: 534in.7TRead the measurement shown on the vernier caliper in Illustration 1 in the following units. U.S. units9TRead the measurement shown on the U.S. micrometer ILLUSTRATION 311TFind the measurement that is a. the most accurate, b. the most precise, c. the least accurate, and d. the least precise: 360V;0.5V;125,000V;600,000VUse the rules of measurement to multiply: (4.0m)(12m)(0.60m)Use the rules of rules of measurement to add: 12.9L+341L+2104L15TUse the rules of measurement to divide: 6.28m225m17TFind a. the relative error and b. the percent of error (to the nearest hundredth percent) for the measurement 5.20 m.19TRead each scale:1CRRound 32,518.612 to nearest a. ten b. hundredth.3CR4CR5CR6CR7CR8CR9CR10CR11CR12CR13CR14CR15CR16CR17CR18CR19CR20CRGiven the number of significant digits in each measurement: 7.002 mFind a. the precision and b. the greatest possible error of each measurement: 14.28 mmFind a. the precision and b. the greatest possible error of each measurement: 62.3 lb24CR25CR26CR27CR28CR29CR30CR31CR32CR33CRRead each scale:Determine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 115 VDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 47,000 lbDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 7009 ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 420 mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 6972 mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 320,070 ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 4400ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 4400Determine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 4400mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 0.0040 gDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 173.4 mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 2070 ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 41,000miDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 0.025 ADetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 0.0350 in.Determine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 6700 gDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 173 mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 8060 ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 240,000 VDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 2500 gDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 72,000miDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 137 VDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 0.047000 A24EDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 0.20 mi26EDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 32.0070 gDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 610 LDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 15,000mi30EDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 100.020 in.Determine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 250.0100 mDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 900,200 ftDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 150 cmDetermine the accuracy of each measurement; that is, give the number of significant digits for each measurement: 16,000 W36EFind a. the precision and b. the greatest possible error of each measurement: 2.70 AFind a. the precision and b. the greatest possible error of each measurement: 13.0 ftFind a. the precision and b. the greatest possible error of each measurement: 14.00 cmFind a. the precision and b. the greatest possible error of each measurement: 1.000 in.Find a. the precision and b. the greatest possible error of each measurement: 15 kmFind a. the precision and b. the greatest possible error of each measurement: 1.010 cmFind a. the precision and b. the greatest possible error of each measurement: 17.50 miFind a. the precision and b. the greatest possible error of each measurement: 6.100 mFind a. the precision and b. the greatest possible error of each measurement: 0.040 AFind a. the precision and b. the greatest possible error of each measurement: 0.0001 in.Find a. the precision and b. the greatest possible error of each measurement: 0.0905 WFind a. the precision and b. the greatest possible error of each measurement: 10,000WFind a. the precision and b. the greatest possible error of each measurement: 1400Find a. the precision and b. the greatest possible error of each measurement: 301,000 HzFind a. the precision and b. the greatest possible error of each measurement: 30,000LFind a. the precision and b. the greatest possible error of each measurement: 7,000,000gFind a. the precision and b. the greatest possible error of each measurement: 428.0 cmFind a. the precision and b. the greatest possible error of each measurement: 60.0 cmFind a. the precision and b. the greatest possible error of each measurement: 120 VFind a. the precision and b. the greatest possible error of each measurement: 300kmFind a. the precision and b. the greatest possible error of each measurement: 67.500 mFind a. the precision and b. the greatest possible error of each measurement: 178in.Find a. the precision and b. the greatest possible error of each measurement: 323ydFind a. the precision and b. the greatest possible error of each measurement: 334ydFind a. the precision and b. the greatest possible error of each measurement: 9732in.Find a. the precision and b. the greatest possible error of each measurement: 458miFind a. the precision and b. the greatest possible error of each measurement: 9516miFind a. the precision and b. the greatest possible error of each measurement: 51364in.Find a. the precision and b. the greatest possible error of each measurement: 949in2Find a. the precision and b. the greatest possible error of each measurement: 1845in3Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:Read the measurement in millimeters shown on each vernier caliper:10E11E12ERead the measurement in inches shown on each vernier caliper:Read the measurement in inches shown on each vernier caliper:Read the measurement in inches shown on each vernier caliper:4E5ERead the measurement in inches shown on each vernier caliper:7E8E9ERead the measurement in inches shown on each vernier caliper:11ERead the measurement in inches shown on each vernier caliper:Read the measurement shown on each metric micrometer:Read the measurement shown on each metric micrometer:Read the measurement shown on each metric micrometer:4E5E6E7E8E9E10ERead the measurement shown on each metric micrometer:12ERead the measurement shown on each metric micrometer:14E15E16E17E18E19ERead the measurement shown on each metric micrometer:Read the measurement shown on each U.S. micrometer:2E3E4E5E6ERead the measurement shown on each U.S. micrometer:Read the measurement shown on each U.S. micrometer:9E10E11E12E13E14E15E16E17E18E19E20EIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 14.7 in.; 0.017 in.; 0.09 in.In each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 459 ft; 600 ft; 190 ftIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 0.737 mm; 0.94 mm; 16.01 mmIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 4.5 cm; 9.3 cm; 7.1 cmIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 0.0350 A; 0.025 A; 0.00050 A; 0.041 A6E7EIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 15.2 km; 631.3 km; 20.0 km; 37.7 kmIn each set of measurements, find the measurement that is a. the most accurate and b. the most precise: 205,000;45,000;500,000;90,00010E11EIn each set of measurements, find the measurement that is a. the least accurate and b. the least precise: 635 ft; 400 ft; 240 ftIn each set of measurements, find the measurement that is a. the least accurate and b. the least precise: 43.4 cm; 0.48 cm; 14.05 cmIn each set of measurements, find the measurement that is a. the least accurate and b. the least precise: 4.9 kg; 670 kg; 0.043 kg15E16EIn each set of measurements, find the measurement that is a. the least accurate and b. the least precise: 2.1 m; 31.3 m; 461.5 m; 0.6 m18E19E20EUse the rules for addition of measurements to find the sum of each set of measurements: 14.7 m; 3.4 mUse the rules for addition of measurements to find the sum of each set of measurements: 168 in.; 34.7 in.; 61 in.Use the rules for addition of measurements to find the sum of each set of measurements: 42.6 cm; 16.41 cm; 1.417 cm; 34.4 cmUse the rules for addition of measurements to find the sum of each set of measurements: 407 g; 1648.5 g; 32.74 g; 98.1 gUse the rules for addition of measurements to find the sum of each set of measurements: 26,000 W; 19,600 W; 8450 W; 42,500 W26EUse the rules for addition of measurements to find the sum of each set of measurements: 140,000V;76,200V;4700V;254,000V;370,000VUse the rules for addition of measurements to find the sum of each set of measurements: 19,200m;8930m;50,040m;137mUse the rules for addition of measurements to find the sum of each set of measurements: 14V;1.005V;0.017V;3.6V30E31EUse the rules for addition of measurements to find the sum of each set of measurements: 1350 cm; 1476 mm; 2.876 m; 4.82 mUse the rules for subtraction of measurements to subtract the second measurement from the first: 140.2cm13.8cm_Use the rules for subtraction of measurements to subtract the second measurement from the first: 14.02mm14.8mm_35EUse the rules for subtraction of measurements to subtract the second measurement from the first: 1,900,000V645,000V_Use the rules for subtraction of measurements to subtract the second measurement from the first: 167mm13.2cm_Use the rules for subtraction of measurements to subtract the second measurement from the first: 16.41oz11.372oz_39E40EUse the rules for subtraction of measurements to subtract the second measurement from the first: 0.54361in0.214in._If you bolt four pieces of metal with thicknesses 0.136 in., 0.408 in., 1.023 in., and 0.88 in. together, what is the total thickness?43E44EA welder cuts several pieces of steel angle of lengths 3.32 ft, 2.15 ft, 3.2 ft, and 4.0 ft. What is the total length of the pieces?46E47E48EAn automobile cooling system is leaking. One day it lost 0.52 gal, a second day it lost 0.4 gal, and a third day it lost 0.34 gal. What was the total coolant lost over the 3-day period?50E51EA 6-room building has the following supply air requirements. A=120ft3/min,B=265ft3/min,C=61ft3/min,andD=670ft3/min What is the required HVAC unit supply air flow?53E54E55EUse the rules for multiplication and/or division of measurements to evaluate: (126m)(35m)Use the rules for multiplication and/or division of measurements to evaluate: (470mi)(1200mi)Use the rules for multiplication and/or division of measurements to evaluate: (1463cm)(838cm)Use the rules for multiplication and/or division of measurements to evaluate: (2.4A)(3600)Use the rules for multiplication and/or division of measurements to evaluate: (18.7m)(48.2m)Use the rules for multiplication and/or division of measurements to evaluate: (560cm)(28.0cm)Use the rules for multiplication and/or division of measurements to evaluate: (4.7)(0.0281A)8E
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