# Alg2

posted by Rock

How many ways can six different books be arranged on a shelf if one of the books is a dictionary and it must be on an end?

1. MathMate

Find all the arrangements for 5 books, and multiply by two, i.e. putting the dictionary at either end.

2. Rock

240

3. MathMate

Perfect!

4. Rock

Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use the formula s=2√5l to estimate the speed=s of a car in miles per hour based on the length=l in feet of the skid marks it left. How fast was a car traveling that left skid marks 120 feet long?

5. MathMate

Sorry Rock.
Please make a new post. Tagging on an existing post will only slow down your response.
Thanks.

6. Rock

Thanks, I did!

7. YourWay2a100

D
A
C
A
Connexus students for quick check 4 Lesson 6 permutation I got 100%

8. Nissan GTR

yourway2a100 is correct its
D
A
C
A

9. Ms Sue

100%

10. John Doe

im going to fund D A C A...get it...oh

11. bshdhdb

john doe that was a horrible joke xD

12. what

i dont get it...... ;-;

## Similar Questions

1. ### College Math

Your small library of books consists of 6 novels, 7 mathematics books, and 1 biology book. Calculate the number of ways to arrange them on a bookshelf for each of these situations. a) The books can be arranged in any order?
2. ### Alg2

A video store has 8 new releases this week. Each is available on videotape and on DVD. How many ways can a customer choose a new release and a format to rent?
3. ### math

In how many ways can 5 books be arranged on a shelf If 2 of the books are identical?
4. ### math

A student has 4 English books,3 math books,and 5 history books.In how many ways can these books be arranged on a shelf if the books in same subjects must be kept together?
5. ### Math

You borrow bookcases like the one shown to display 943 books at a book sale. You plan to put 22 books on each shelf. No books on top of the bookcases. A. How many bookcases must you borrow to display all the books?
6. ### math

There are 2 books on the first shelf,6books on the second shelf,12 books on the third shelf and 20 books on the the fourth shelf how many books on the tenth shelf. What do I do i need help
7. ### math

Robert must read a few books from his home library. He read 4 out of 6 books from the top shelf, then 2 out of 3 books from the middle shelf and then 3 out of 6 books from the bottom shelf. In how many ways can Robert read the books, …
8. ### math

Two shelves contain 55 books. If half of the books from the second shelf were relocated to the first shelf, then the first shelf would contain 4 times more books than the second one. How many books are there on each shelf?
9. ### Math - combinatorics/ permutations

There are nine differently-titled books on a shelf. Four books have red covers, while the other five have black covers. How many different arrangements of the books can there be, if (a) there are no restrictions on the order in which …
10. ### math

Lara arranged the books in her bookshelf by size she arranged 2/10 of the books were tall and 1/2 of the books were medium sized. if 12 of the books were small, how many total books did she arrange?

More Similar Questions