Answer:
Martin is going to tutor Robin in math in exchange for baseball cards.
Frank is working to earn Mt. Tanner's antique bike by cutting his grass each week.
Explanation:
The exchange of goods and services refers to the system of bartering where the individuals doing the exchange make no use of money. In other words, the system of barter, commerce where there is an exchange between goods and services between people without the use of money.
In the given sentences, there is an exchange of goods and services in the case of Martin and Robin, and Frank and Mr. Tanner. In these two instances, the <u>exchange does not involve money but an exchange between services rendered and goods given in return for the services.</u>
Thus, the correct answer is the third and sixth options.
Answer:
I think that since jet is younger, is brain will be able to speak the second language in no time but Mr. Li would need months practice before he could speak english
Explanation:
Answer:
The answer is a double-blind study.
Explanation:
A double-blind study is a research method in which neither the participants or the researchers are aware about which group is receiving the treatment. This is done in order to avoid biases such as the placebo effect, as well as preventing accidental cues given by the researchers.
The greatest advantage of this approach is its high validity.
I MEAN, I WOULDN'T BE SURPRISED, SO YEAH, I THINK SO?
Answer:
Study of the Nigerian people and its vast spread of ethnic groups can help in unifying the diverse ethnic groups as one understand the culture conventions and principles associated to each ethnic group making them to understand one another which can promote unity.
PLEASE MARK MINE AS THE BRAINLIEST
