Answer:
So, the number of combinations is 57600.
Step-by-step explanation:
From Exercise we have
5 different history textbooks
4 different science textbooks
For the place in the middle we have 4 books so the number of combinations for that place is 4.
For the places at the end of the shelf I have 5 books, I need 2, so the number is a combination:
2· \frac{5!}{(5-2)!·2!}=2·10=20
For the 6 places on the shelf I have 6 books so the number is a combination 6!=720
So, the number of combinations is:
4·20·720=57600.
A.
add 12 to both sides the divide 8 by both sides and there is the answer to x
Answer: I think the coefficient is -x
$299 and $199 adds up to 498, including the tax rate 7.5% and your total is $535.35