Answer:
No, the triangular numbers are not a direct variation. There is not a constant of variation between a number and its position in the sequence. The ratios of the numbers to their positions are not equal. Also, the points (1, 1), (2, 3), (3, 6), and so on, do not lie on a line.
Explanation:
this is correct on edge
Answer:
Explanation:
The <em>correlation coefficient</em> is a measure of the linear association between two variables.
It is a dimensionless value bettween - 1 and +1. Hence, it does not depend on the units that are used to measure the data.
You can see the formula to calculate the correlation coefficient in the attached picture.
There you see that the numerator containts the sum of the differences of the values of the x-variable with its the mean, multiplied by the sum of the differences of the values of the y variable with its mean, while the denominator contains the square root of the product of the squares of the same differences, thus the units are canceled.
In conclusion,<em> If the teacher changes the units of each variable from hours to minutes, the value of the correlation coefficient between minutes studying and minutes spent on the Internet will not change</em>; it will continue being <em>−0.72.</em>
Change the words add a beat and yeah
The correct answer to this open question is the following.
The appeal is John Adams using in this letter to a fellow colonist who supported the king was logos, the appeal to logic or reason that is supported by arguments.
John Adams tried to convince those loyalists to change their minds and support the Revolutionary movement. He used logic because he stated the reasons and gave arguments. He literary wrote: "That a representation in parliament is impracticable, we all agree; but the consequence is, that we must have a representation in our supreme legislatures here. This was the consequence that was drawn by kings, ministers, our ancestors, and the whole nation, more than a century ago, when the colonies were first settled."
Let's remember the other two rhetoric devices: Pathos and Ethos. Pathos is the use of emotion to appeal to audiences. Ethos is the use of the experience or reputation of the speaker to convince an audience.
The natural grassland ecosystem is known for its relatively high net primary productivity and high trophic efficiencies compare to other types of ecosystem, many reasons are responsible for this and three of them are listed below:
1. Natural grassland are regionally adapted to survive environmental fluctuations and grazing pressure.
2. The diverse producer base of the natural grassland ecosystem results in a large number of trophic connections. This enhances energy transfer and reduces energy losses.
3. Nutrient cycling in the natural grassland ecosystem is very efficient and this contributes to the overall efficiency of the ecosystem. The recyclers in the ecosystem decompose dead organic matters and release the energy trapped inside them.
