Answer:
payback period is 9.4785 ≅ 9.5 years
Explanation:
BTU stands for British thermal units and MCF stands for the volume of 1,000 cubic feet.
We know that one thousand cubic feet (Mcf) of natural gas equals 1.037 million Btu.
Difference between heat loss before and after installation = (42-28) millions BTU = 14 millions BTU
14 million BTU is equivalent to --
1.037 million BTU = 1 MCF
1 million BTU = (1/1.037) MCF
14 million BTU = (1/1.037) x 14 MCF = 13.5004 MCF
Cost of 13.5004 MCF = = $8.94 x 13.5004 = $120.6935
Pay back period = (1144/120.6935) = 9.4785
Therefore, her payback period is 9.4785 ≅ 9.5 years
Hey,
Jamestown settlers experimented with GLASSBLOWING, VINEYARD cultivation, and even silkworm farming. Despite efforts to diversify
the economy, by the end of the 1620s only one crop was drawing a fair market price in England: tobacco.
Answer:
c. predictive validity
Explanation:
In research, the term predictive validity refers to the fact that a score in a test or the performance on a task is related to the performance in another test or task that is evaluated in the future after the first test. So, the first test/criterion will likely predict how the person will do in the second one.
In this example students take a college entrance exam and it's been observed that the ones who do well in them, do well in their first year of college. We can see that <u>the score in the entrance exam will likely predict how the students will do during their first year of college</u>. Therefore, these exams have predictive validity.
The early human civilization were generally settled at a distance from oceans, as they felt that such water is of no use to them.
<h3>What is the significance of early civilizations?</h3>
One of the earliest civilizations in the world began near the rivers and valleys, because they had diversity of natural resources. Moreover, rivers and valleys have been given to birth to agricultural practices.
After knowing about these advantages, people realized that settlements shall never be practiced near the oceans, as the ocean water is not useful for human consumption.
Therefore, the significance of early civilizations has been aforementioned.
Learn more about early civilizations here:
brainly.com/question/9479371
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