Which of the following is an example of a combination? O A. Picking 3 books to take with you on vacation from a collection of
20 books
O B. Selecting a president, vice president, and treasurer
O C. The number of ways that 4 people can win 4 different prizes
O D. The number of ways that 7 books can be placed in a row on a
bookshelf

a

Step-by-step explanation:

uh this is basic head knowledge for me i cant really explain

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

(0.2)+(-8)=0.3+-3+0.3m is the equation i guess? ?

step-by-step explanation: