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Fiesta28 [93]
3 years ago
8

How many different outcomes are possible for seven people seated in chairs arranged in a line?

Mathematics
1 answer:
Sveta_85 [38]3 years ago
6 0
Person A could have any SIX dif. people sitting to her left. the person on A's left can have FIVE dif.people sit on his left. that person could have any of the remaining FOUR to her left and so on to the last person. so, there are 6x5x4x3x2x1= 720 possible arrangments. 
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Answer:

5,470 mg

Step-by-step explanation:

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fiasKO [112]

Step-by-step explanation:

\underline{ \underline{ \text{Given}}} :

  • \tt{4x + 3y = 20...........  \text{ equation \: ( \: i \: )}}
  • \tt{4x + 2y = 14.......... \text{equation \: (ii)}}

\underline{ \text{USE \: ELIMINATION  \: METHOD}} :

Subtract equation ( ii ) from equation ( i ) :

Remember that the sign of each term of the second expression changes i.e equation ( i ) now becomes -4x -3y = -20

\tt{ \cancel{4x }+ 2y = 14}

\tt{ \cancel{ -  4x} -  3y =  - 20}

__________________

\tt{ - y =  - 6}

⟿ \tt{ \boxed{ \tt{y =  6}}}

Again , Substituting the value of y in equation ( ii ) :

⟿ \tt{4x + 2 \times 6 = 14}

⟿ \tt{4x + 12 = 14}

⟿ \tt{4x = 2}

⟿ \boxed{ \tt{x =  \frac{1}{2}}}

\red{ \boxed{ \boxed{ \tt{Our \: final \: answer : x =  \frac{1}{2 }  \: and \: y = 6}}}}

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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sasho [114]

V is going to equal 5/8

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grin007 [14]
C is your answer. 

It contains the proper points and form. A is not in point-slope form and B has the incorrect slope. 
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