Which is the correct answer choice?

Mathematics

2 answers:

Paraphin [41]3 years ago

7 0

Answer: Plain coffee

Step-by-step explanation:

The two branches (2 and 3) divide into the two drinks of the sale. Since espresso is already in the diagram and coffee is not, and coffee is independent from espresso, coffee is found in box 1.

pav-90 [236]3 years ago

3 0

Answer:

second one I think is best for you to do

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Rob has -180 points in a game. He gains one-fourth of his points back on his next turn and gains back an additional one-fifth of

Leya [2.2K]

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Step-by-step explanation: I need points

6 0

3 years ago

Suppose you pick two cards from a deck of 52 playing cards. What is the probability that they are both queens?

photoshop1234 [79]

Answer:

0.45% probability that they are both queens.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes

The combinations formula is important in this problem:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes

You want 2 queens. Four cards are queens. I am going to call then A,B,C,D. A and B is the same outcome as B and A. That is, the order is not important, so this is why we use the combinations formula.

The number of desired outcomes is a combinations of 2 cards from a set of 4(queens). So

$D = C_{4,2} = \frac{4!}{2!(4-2)!} = 6$