John could not decide in what order to place his 7 books on his new shelf. How many ways can the 7 books be arranged?

The 7 books can be arranged in 5040 ways.

Step-by-step explanation:

It is given that,

John has 7 books and he has not decided to arrange the books in order.

So, you need to find out how many ways he could arrange his 7 books.

The first place can be filled up by any one of the 7 books.

Having filled the first place with any one of the 7 books we are left with 6 books.

The second place now can be filled up by any on of 6 books and so on.

This process gets repeated until no books are left.

We can thus fill up all the 7 places in 7(6)(5)(4)(3)(2)(1) = 7!

⇒ 7! = 7×6×5×4×3×2×1

⇒ 5040 ways.

Hence, we can arrange 7 different books on a shelf in 5040 ways.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck