There are other ways of expressing uncertainty besides significant figures. for example, suppose a quantity is known to have a value between 20.4 and 20.0 and our best estimate of the value is midrange at 20.2. we could write the number as 20.2 +/- 0.2 and say that the number has a 1% uncertainty. we would also say it has 3 significant figures. if we square a number with 1% uncertainty (i. e., 2 parts in about 200) and 3 significant figures, what results? 1 unlocks icon subscribe to course hero to unlock this document unlocks icon subscribe to course hero to unlock this document unlocks icon subscribe to course hero to unlock this document

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.

too hard the other guy did it

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answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

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both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

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