The one in the first seat can be any one of 60.
For each of those . . .
The one in the 2nd seat can be any one of the remaining 59.
For each of those . . .
The one in the 3rd seat can be any one of the remaining 58.
For each of those . . .
.
.
.
The one in the 9th seat can be any one of the remaining 52.
For each of those . . .
The one in the 10th seat can be any one of the remaining 51.
Total number of ways to pick 10 students out of 60
and arrange them in 10 seats =
(60·59·58·57·56·55·54·53·52·51) = 273,589,847,200,000,000.
(rounded to the nearest hundred million ways)
Number of ways to pick 10 students out of 60,
no matter how they sit =
(60·59·58·57·56·55·54·53·52·51) / (10·9·8·7·6·5·4·3·2)
= 75,394,027,560. (rounded to the nearest 10 ways)
Answer:
He can buy 6 packs of cards and he still gets the free poster.
Step-by-step explanation:
39-3 = 36
36 divided by 6= 6
He get 6 packs of cards and 1 action figure. ANd spends exactly 39 dollars.
Answer 4:00pm= 15
Step-by-step explanation:
45 plus 15 is 4:00
The given equation is 4x^2=x^3+2x.
On the left side it has 4x² and on the right side the expression is x³+2x.
So, if we have any system of equations in which we have these two expression which will be equal to any other variable then we can use that system of equations to find the roots.
Now notice that in option D it's given,
y=4x² and y=x³+2x.
So, if we will equate this equations then we will get the same above equation which will be use to find the roots.
So, D is the correct choice.