Answer:
40,320.
Step-by-step explanation:
We are asked to find the number of ways in which 8 books could be arranged on a shelf.
The 1st could be arranged in 8 ways. Since one place is filled, so 2nd book could be arranged in 7 ways.
Similarly, the 3rd book could be arranged in 6 ways as first two places are already taken. This process will go on.
So the 8 books can be arranged in
Therefore, 8 books could be arranged in 40,320 ways.
Answer:x=1
Step-by-step explanation:
(2x-5)/(x-2) - 2=3/(x+2)
(2x-5-2(x-2))/(x-2)=3/(x+2)
(2x-5-2x+4)/(x-2)=3/(x+2)
-1/(x-2)=3/(x+2)
Cross multiply
-1(x+2)=3(x-2)
Open brackets
-x-2=3x-6
Collect like terms
3x+x=6-2
4x=4
Divide both sides by 4
4x/4=4/4
x=1
Answer:
t(-6,2)
Step-by-step explanation:
t(-6,2)
t+2>-4
t+2<4
t>-6
t+2<4
t>-6
t<2
Answer: The cost for 20 people equals $180.
Step-by-step explanation:
Given: It costs $100 to rent the bowling alley, plus $4 per person.
The cost for any number (n) of people can be found using the expression
We can find the cost for 20 people by substituting n=20 in the above expression, we get
Hence, The cost for 20 people equals $180.