20 find the theoretical probability of each outcome.

1. flipping 2 coins and 1 landing with heads showing, the other with tails showing.

2. randomly choosing a blue marble from a bag of 5 blue marbles, 8 red marbles, and 7 yellow marbles.

3. the probability of a spinner landing on yellow is 4/9. what is the probability of it not landing on yellow?

Step-by-step explanation:

1)

Probability for flipping one coin is 1/2

Probability for flipping two coins should be about 1/2 * 1/2 which is 1/4

There is a 1/4 chance

2)

First you must find the sum of all the marbles which would be 20

Now, put the blue marbles over the sum of 20 which is

5/20 or simplified to 1/4 which is the probability of choosing a blue marble

3)

If the probability of landing on yellow is 4/9, whatever is left is the probability of not landing on yellow which is 5/9

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20