Answer:
10.55% probability that she will choose one by each composer
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order in which the CDs are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
Desired outcomes:
1 Bach CD, from a set of 4.
1 Beethoven CD, from a set of 6.
1 Brahms CD, from a set of 3.
1 Handel CD, from a set of 2.
So
Total outcomes:
4 CDs from a set of 4+6+3+2 = 15.
So
Probability:
10.55% probability that she will choose one by each composer
Answer:
Step-by-step explanation:
This question is weird but my guess is C. You do need to create formulas.
D, E and F will lie on the line
Answer:
No, it didn't return to the same price
Step-by-step explanation:
Let the initial stock price be 100
When it increased by 60%, it went to:
60% = 60/100 = 0.6
0.6 * 100 = 60
100 + 60 = 160
Then, from 160, it decreased by 60%, so it went to:
60% = 0.6
So,
0.6 * 160 = 96
Now,
160 - 96 = 64
So final price is 64. So, it didn't go back to original (100).
Answer:
8
Step-by-step explanation: