Yaritza loves to read and owns 8 different novels. If there is only room for 6 novels on her bookshelf, how many different ways can she arrange the books on her shelf? * A.28 ways
B.48 ways
C.720 ways
D.20,160 ways
E.60,720 ways

D.

Step-by-step explanation:

1 bookshelf have option of 8 books where, only one book can be kept

2 bookshelf has 7 options of books as ( 8-1=7, where 1 is already kept in bookshelf, than same goes on till last shelf where it got 3 options of book in the last place,

therefore, total no. of ways = ( 8*7*6*5*4*3)

= 20160 ways

21

jk it's 20

step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours