Answer:
The exchange of goods and services without the use of money
Explanation:
Difficulties with this may be:
Lack of a common measure of value.
Lack of fair exchanges
Lack of double coincidence of wants.
Difficulty in storing value.
Answer:
Keir will have the most money to spend on a new boat at the end of the five years; $1,440
Explanation:
Three friends decide that they each want to be able to buy a new boat in five years. Vanore puts $1,000 in a savings account with a simple interest rate of 4.5%. Keir invests $1,200 in a standard savers account with a simple interest rate of 4%. Omar invests $950 in a junior achievers account with a 6% annual compound interest rate. Who will have the most money to spend on a new boat at the end of the five years?
Vanore puts $1,000 in a savings account with a simple interest rate of 4.5%.
Vanore:
I = p * r * t
= 1000 * 0.045 * 5
= $225
I = $225
After 5 years, Vanore will have $1000 + $225
= $1225
Keir invests $1,200 in a standard savers account with a simple interest rate of 4%
Keir:
I = p * r * t
= 1200 * 0.04 * 5
= 240
I = $240
After 5 years, Keir will have $1200 + $240
= $1,440
Omar invests $950 in a junior achievers account with a 6% annual compound interest rate.
Omar:
A = P (1 + r)^t
= 950(1 +0.06)^5
= 950(1.06)^5
= 950(1.3382)
= 1271.1
A = $1,271.1
After 5 years, Omar will have $1,271.1
Keir will have the most money to spend on a new boat at the end of the five years; $1,440
Answer:
The conclusion is false, because it is assuming that correlation = causation.
Explanation:
An important principle in statistical analysis is the principle that when correlation exist between two variables or more, it does not mean that one of the variables are causing the other to appear in a certain manner.
Remember that correlation means that you are investigating whether a relationships exists between two variables; in this example, as we can see, it is between the biodiversity in an ecosystem and the population of an insect.
The graph can be said to illustrate the result of the research; that as the biodiversity of the ecosystem goes down, the insect's population goes up. This is a form of negative correlation.
However - we do not know what is the direction of the relationship; the student concludes that as some insects die within the ecosystem, the researched insect's population goes up; assuming that the predator species died off and thus the researched insect's population increases.
Yet, it is also possible for the relationship to go towards the other direction; the researched insect population increases - perhaps by the introduction of a new food source that causes the species' population to increase - and thus, this damages the biodiversity of the ecosystem, making the population go down since it is possible that the researched insect is instead the species which is on top of the food chain at that ecosystem.
To investigate the direction of a relationship, further research need to be done and more sophisticated statistical methods need to be used.
Answer:
smarter?
Explanation:
You will have more knowledge with more education
During the valsalva's maneuver, glottis is the part of the larynx closes to increase intra-abdominal pressure, such as to help with defecation
The glottis is a slit-like opening on floor of the pharynx, is called valve that can controls airflow in and out from the respiratory passages. The glottis may opens directly into the boxlike larynx. This voice box is occurs in all the amphibians but is anatomically most of the complex in frogs.
The larynx, can commonly called the voice box or glottis, is the passageway for the air between the pharynx and above and the trachea below. It extends from the fourth the sixth vertebral levels.
To know more about glottis visit:
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