mpchop
21.07.2019 •
Mathematics
Arectangular seating chart has an area of 10in by 14in. there are 2in by in squares with students’ names on it. what is the probability that a student is chosen to answer a question once but is not selected the second time?
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Ответ:
The area of one square of dimensions 2 in by 2 in is 4 in squared.
Thus, there are a total of 140/4=35 squares, which means 35 student names on the seating chart.
The probability of choosing a certain student the first time is 1/35=0.029.
The probability that that particular student is not chosen is 34/35=0.97.
Thus, the probability that the student is chosen the first time, and not chosen the second time is 0.029*0.97=0.028.
0.028
Ответ:
The first transformation was a rotation rotation about point A
The second transformation was a reflection across line M