Answer:
10.55% probability
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.
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, D=144
4 CDs from a set of 4+6+3+2 = 15.
So, T= 1365
p= D/T= 144/1365 = 0.1055
10.55% probability that she will choose one by each composer
Http://www.meta-calculator.com/online/?panel-102-graph&data-bounds-xMin=-10&data-bounds-xMax=10&data...
C temp. pH and regulatory molecules
Answer:
12 packages.
Step-by-step explanation:
Peaceful travel agency offers vacation packages.
Each vacation package include a city, a month and an airline.
The agency has 2 cities, 3 months and 2 airlines to choose from.
Agency can offer the number of different packages = 2 × 3 × 2