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Lynna [10]
3 years ago
13

Jing jing works in a store and she spends some of her time organizing the stationary section. If there are nine different items

on the rack, how many ways can she organize the rack so that the two most expensive items are not together?
Mathematics
1 answer:
Alexus [3.1K]3 years ago
4 0

Answer:

282240 ways

Step-by-step explanation:

number of items = 9 different items

Ranking based on worth

<u>determine number of ways to arrange the 9 items such that the 2 most expensive are apart</u>

first step: consider the 2expensive items as 1

∴ number of permutation = [ ( 9 - 2 ) + 1 ]!  * 2!

                                          = [ 8 ] ! * 2!  = 80640

Total number of permutation/arrangement = 9! = 362880

hence to arrange the 9 items without having the two most expensive items together

= 362,880 - 80640

= 282240 ways

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Answer:

I only know one way and its x = 7

Step-by-step explanation:

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20/5 = x- 3

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Travka [436]

The surface area of the box will be 112 in²

Explanation

According to the given diagram, the shape of the box is Right Rectangular prism.

The formula for the surface area is :

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Given in the diagram that, l= 8, w=4 , h=2

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So, the surface area of the box is 112 in²

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3 years ago
Solve x2 − 7x + 12 = 0.<br> x = −3, x = −4<br> x = 3, x = 4<br> x = 2, x = 6<br> x = −2, x = −6
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Answer:

x=4, x=3

B is correct.

Step-by-step explanation:

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Answer:

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