Three classes of school children are selling tickets to the school play. the number of tickets sold by these classes, and the nu
2 answers:
We know that by employing the formula for the average here, we can find the average number of tickets sold per school child as the ratio of the total number of tickets sold to the total number of children in the school.
Let A be the average number of tickets sold per school child.
Let T be the total number of tickets sold.
Let C be the total number of children in the school.
Then from the information provided in the question,
T=tickets1+tickets2+tickets3 and C=class1+class2+class3
Thus, A can be expressed as:
The above is the expression for the average number of tickets sold per school child.
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Answer:
C
Step-by-step explanation:
The rate of change here will be the difference in the number of tracks divided by the difference in the number of albums.
Let's pick two random rows (it doesn't matter which two because they will produce the same result): (2, 16) and (4, 32).
The rate of change is:
The answer is thus C.
Answer:
The correct option is 4) 0.72.
Step-by-step explanation:
Consider the provided information.
Let us consider that there are 100 members.
(Note: you can take any number the answer will remain the same.)
90% of its members drank protein shakes and of the members who drank protein shakes.
90% of 100 is 90.
Thus, 90 members drank protein shake.
Of the members who drank protein shakes, 30% took weight-loss medication.
30% of 90 is 27.
That means 27 out of 90 took weight loss medication.
Out of 100 members 90 drank protein shakes that means 10 members does not take protein shakes.
Only 10% of members who did not drink protein shakes took weight-loss medication.
10% of 10 is 1, that means 1 member out of 10 took weight loss medication.
Thus the required table is:
Medication Not Medication Total
Drank shakes 27 63 90
Doesn't Drank shakes 1 9 10
Total 28 72 100
Now we need to find the probability that a gym member does not take weight-loss medication.
72 out of 100 members does not take weight-loss medication.
Therefore, the required probability is:
Hence, the correct option is 4) 0.72.