<span> Use the substitution method to justify that the given system of equations has no solution.</span>
Answer:
First answer is correct.
Step-by-step explanation:
Answer:
Choose every tenth student entering the school and ask them if they like the dress code or not.
Step-by-step explanation:
This is a question of sampling. We need to make non-biased predictions using non-biased data. We can sample from every tenth student to stay proportional. Sampling many students can collect more data and can help keep the data non-biased.
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-Chetan K
