1.The actual distance of two car park is 6km. Alice and Anderson plan to sketch 2maps with different scales to show the locations of the two car parks. Suggest the scales of two maps and finds the distances bewteen the car parks on the two maps respectively.
2(a) The population of a country is 1452698. Express the population in scientific notation and correct to not less than 2 significant figure.
(b) What is the maximum absolute error of the result in (a)?
f2. maths.
2012-04-20 4:52 am
回答 (1)
2012-04-20 7:58 am
✔ 最佳答案
1 Map A : 1 cm = 0.5 kmThe distance between two car parks = (6 km/0.5 km) * 1 cm = 12 cm
Map B : 1 cm = 1 km
The distance between two car parks = (6 km/1 km) * 1 cm = 6 cm
2(a) 1452698 = 1.5 * 10^6
(b) maximum absolute error = 0.05 * 10^6 = 50000
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