Mathematics, 17.04.2020 20:17 bacchus2847
At the start of the school year, students in Mr. Pi’s class were asked the
following question: “Do you love Math?” They were only allowed to answer “yes”
or “no”, and everyone had to answer. Of the 30 students in the class, 21 answered
“yes” and 9 answered “no”.
That day, with every student present, the probability of randomly selecting a
student who answered the question “yes” was 21
30 =
7
10 and the probability of
randomly selecting a student who answered the question “no” was 9
30 =
3
10.
However, on one particular morning later in the year, the following information
was known about the class:
• at least one of the students who had answered “yes” was absent and at least
one of the students who had answered “no” was absent;
• more than half of the class was present; and
• the probability of randomly selecting a student who had answered the
question “yes” was 3
4
.
Is there enough information to determine how many students were absent that
particular morning? If yes, how many students were absent? If no, explain why
Answers: 3
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Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
Answers: 2
Mathematics, 21.06.2019 22:00, NetherisIsTheQueen
You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?
Answers: 2
Mathematics, 21.06.2019 22:30, ondreabyes225pcr83r
Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62
Answers: 2
At the start of the school year, students in Mr. Pi’s class were asked the
following question:...
following question:...
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