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05.02.2020 •
Mathematics
125 freshman, 85 passed the english test, 95 passed statistics test, 15 failed both what is the probability that they passed both
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Ответ:
0.56
Step-by-step explanation:
125 in total.
Let x be the number of those who passed both tests.
85 passed English, then 85-x passed only English;95 passed statistics, then 95-x passed only statistics;15 failed both.Thus,
x+(85-x)+(95-x)+15=125,
195-x=125,
x=70.
Thus, the probability that they passed both tests is
Ответ:
The sum of the three angles of any triangle will always be 180 degrees because when all three angles are put together, they form a straight line.
Step-by-step explanation:
or
Sample Response: The sum of the three angles of any triangle will always be 180 degrees because when all three angles are put together, they form a straight line.