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Answer (4)
Observation is acknowledging and noting some facts from the surroundings or the environment. Usually, observation is done using the five senses of human such as the sense of sight, sense of smell, sense of touch, sense of hearing and sense of tasting. It can also be qualitative and quantitative. Qualitative observations are those who use non-numeric forms in expressing the observation however quantitative uses numeric forms in presenting the observation. Inference on the other hand is the probable explanation or interpretation based on the observation given. Therefore, the statement "The container is filled to the 350 ml mark with water " is an observation.
The statement about the container filled to the 350 ml mark is an observation. Inferences are made when conclusions are drawn from observations, such as deducing the actual volume of water added to a container based on its mass. These measurements are part of typical laboratory procedures involving the use of graduated cylinders and beakers.
When stating 'The container is filled to the 350 ml mark with water', one is making an observation. Observations are statements that describe a fact as it is perceived by the senses and are not deduced by reasoning or interpretation. The mentioned container reaching the 350 ml mark is a straightforward observation because it involves seeing the level of the water in relation to the scale marked on the container.
In an experimental context, if you say 'In this case I measured 25.0 mL with the graduated cylinder, but the mass tells me that I actually poured 24.94 mL of water into the container', you're inferring that the volume measured by the graduated cylinder may not precisely represent the true volume of water you added to the container. This inference is based on the mass of the water and the known density of water (1 g/mL at room temperature).
A graduated cylinder, a beaker, and other measuring devices are often used in a laboratory setting to accurately measure and manipulate volumes of liquids. This is part of the process in various experiments, such as heating water in a microwave and measuring temperature changes, or determining the volume of water by observing the meniscus in a cylinder.
The statement 'The container is filled to the 350 ml mark with water' is an observation since it describes a measurable fact without interpretation. Observations are based on direct evidence, whereas inferences are conclusions drawn from what is observed. Therefore, this statement is not an inference but a clear observation.
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Jawaban:[tex] \frac{ {3}^{5} }{ {3}^{6} } \times \frac{ {5}^{6} } { {5}^{3} } = {3}^{5 - 6} \times {5}^{6 - 3} = {3}^{ - 1} \times {5}^{3} = \frac{ {5}^{3} }{3} = \frac{125}{3} [/tex][tex] \frac{ {4}^{2} \times {5}^{6} \times {5}^{2} }{ {4}^{6} \times {5}^{3} } = \frac{ {4}^{2 - 6} \times {5}^{6 + 2 - 3} }{1} = {4}^{ - 4} \times {5}^{5} = \frac{ {5}^{5} }{ {4}^{4} } = \frac{3125}{256} [/tex][tex] \frac{ {2}^{4} \times {3}^{6} \times {2}^{7} \times {3}^{8} }{ {2}^{3} \times {3}^{9} \times {3}^{7} } = {2}^{4 + 7 - 3} \times {3}^{6 + 8 - (9 + 7)} = {2}^{8} \times {3}^{ - 2} = \frac{ {2}^{8} }{ {3}^{2} } = \frac{256}{9} [/tex][tex] \frac{ {3}^{4} \times {2}^{5} \times {5}^{6} \times {2}^{3} }{ {2}^{7} \times {3}^{2} \times {3}^{6} \times {5}^{4} } = \frac{ {3}^{4} }{ {3}^{2 + 6} } \times \frac{ {2}^{5 + 3} }{ {2}^{7} } \times \frac{ {5}^{6} }{ {5}^{4} } = {3}^{4 - 8} \times {2}^{8 - 7} \times {5}^{6 - 4} = {3}^{ - 4} \times {2}^{1} \times {5}^{2} = \frac{2 \times 25}{ {3}^{4} } = \frac{50}{81} [/tex]
