christyr2002
25.06.2019 •
Mathematics
Mike wants to conduct a survey to find how much time the students of his school spent watching television. which of the following is an appropriate statistical question for this survey? who watched television on weekends? how many hours per week do you watch television? who watches television the most on monday nights? how many students watch television for an hour every day?
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Ответ:
How many hours per week do you watch television?
Step-by-step explanation:
In order to conduct a proper survey about a specific topic, it is necessary to be direct and clear. In the case of time spent by students watching TV, asking this question would be effective enought to collect necessary data so as to provide useful and good quality information, which will result in a sucessful survey.
Ответ:
Fourth option is correct. The length of B'C' is 1 unit.
Step-by-step explanation:
The vertices of triangle ABC are A = (2, 2), B = (4, 3), and C = (6, 3).
Distance formula:
The length of BC is 2 units.
It is given that ΔABC is dilated by a scale factor of 0.5 with the origin as the center of dilation, resulting in the image ΔA′B′C′.
It means the ΔABC and ΔA′B′C′ are similar and corresponding sides of ΔA′B′C′ and ΔABC are proportional.
The scale factor is 0.5.
Therefore the length of B'C' is 1 unit and fourth option is correct.