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Answer:
Each student's contribution = $17
Each student will save $ 3
Step-by-step explanation:
Cost of the block of 5 tickets is $85.00.
Dividing the $ 85 by 5 would give the equal amount each would have to contribute.
$ 85/5=$ 17
Each will have to pay $ 17 to buy a block of 5 tickets for $85.00.
We can find the amount each will save by subtracting the amount to be shared by the 5 students from the amount paid by the 4 students.
They will save
$ 20-$17=
$3
Each of them will save $3 if they can get a fifth person to join them and the 5 people equally divide the price of the 5-ticket block.
Answer:
9/-5
Step-by-step explanation:
5--4/-2-3
9/-5
Answer:
29. 15.87%
30. 4.75%
31. 0.62%
32. probability cannot be calculated (0%)
Step-by-step explanation:
We have that the formula of the normal distribution is:
z = (x - m) / sd
where x is the value we are going to evaluate, m is the mean and sd is the standard deviation
x = 16 and m = 16.5
when sd = 0.5
z = (16 - 16.5) /0.5
z = -1
Now when looking in the z table, we have that the corresponding value is 0.1587, that is, the probability is 15.87%
when sd = 0.3
z = (16 - 16.5) /0.3
z = -1.67
Now when looking in the z table, we have that the corresponding value is 0.0475, that is, the probability is 4.75%
when sd = 0.2
z = (16 - 16.5) /0.2
z = -2.5
Now when looking in the z table, we have that the corresponding value is 0.0062, that is, the probability is 0.62%
when sd = 0
z = (16 - 16.5) / 0
z = infinity
probability cannot be calculated