Answer:
The correct answer is <em><u>A) At least once a year</u></em>
Explanation:
The battery and charging systems are very robust. However, they play such an important part that it is better to maintain and upkeep for maximum performance.
Once a year is an ideal time to check the charging and battery. If you have the time and expertise, you can obviously do it twice a year.
If you only do it once a year, it is better to do in the Fall, before winter arrives, so you are prepared.
Answer:
C
Explanation:
Please refer to the picture attached.
To find the solution for the polynomial, since the highest power of the equation is 2, u can use the formula as stated in the picture to solve the equation to find the 2 solutions.
In the options above, only C matched one of the 2 answers of this equation.
If everyone in the population has an equal chance of inclusion in a study, then one would say that the study used a Random sampling technique for the study. (Option A.)
The way in which we select a sample of individuals to be research participants is critical. Random sampling makes sure of the population which has to be random and need not be pre determined . The procedure we plan to implement will determine if we are biased or not , if the people know each other or not etc.
To read more about Sample techniques here brainly.com/question/16813351
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