If we put 5 math, 6 biology, 8 engineering, and 3 physics books on a bookshelf at random, what is the probability that all the math books are together?

Step-by-step explanation:

Given : Number of math books = 5

Total number of books = 5+6+8+3=22

Number of books except math = 17

Number of ways to arrange 22 books in bookshelf =

When all math books are together , then we count whole set as one

Now, the number of objects in bookshelf = 17+1=18

Number of ways to arrange books such that all math books are together =

Now, the probability that all the math books are together :-

Hence, the probability that all the math books are together

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !

3x + 4y -25 =0 represents the amount of change sianna should recieve