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Robyn32
20.09.2020 •
Mathematics
A homeowner notices that the electric bill for the house is often much higher in the summer months. Collecting data from the last 18 monthly electric bills, the amount of each bill is plotted against the mean temperature for each month. The logs of both the mean monthly temperature and the electric bill are taken in order to develop a linear model. A graph titled log (bill) versus log (temperature) has log (temperature) on the x-axis, and log (bill) on the y-axis. Points increase in a line with positive slope. A graph titled Residuals versus log (temperature) has log (temperature) on the x-axis, and residual on the y-axis. Points are scattered throughout the graph. Based on the scatterplot and residual plot, which type of model is most suitable for modeling electric bills based on mean monthly temperature? A linear model is appropriate because the residual plot shows a random scatter. A logarithmic model is appropriate because logarithms were used to transform the data sets. A power model is appropriate because the scatterplot of log temperature and log bill is roughly linear, and the residual plot shows no distinct pattern. An exponential model is appropriate because the scatterplot of log temperature and log bill is roughly linear.
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Ответ:
60 inches
Step-by-step explanation:
In a rectangle, there are 2 pairs of congruent sides. Therefore, the perimeter of a rectangle can be found using:
p=l+l+w+w
We know that the length is 18 and the width is 12, so we can substitute 18 in for l, and 12 in for w.
p=18+18+12+12
Add all the numbers together
p=60
So, the perimeter is 60 inches