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3 years ago

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There are 12 students who wish to enroll in a particular course. there are only five seats left in the classroom. how many diffe

rent ways can five students be selected to attend the class?

1 answer:

siniylev [52]3 years ago

5 0

792 is the answer

(12*11*10*9*8)/5!=792

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Can somebody please help me

guajiro [1.7K]

Here is your answer

B. (12,30)

REASON:

Given,

$y= 2x+6$ .......(i)

$3x-y= 6$ .......(ii)

Putting the value of y from eq.i in eq.ii we get

$3x-(2x+6)=6$

$3x-2x-6=6$

$=6+6$

$x=12$

Putting x=12 in eq.i we get

$y= 2x+6$

$y= 2×12+6$

$y= 24+6$

$y= 30$

So,

$\bold{x=12 and y= 30}$

Hence answer is (12,30) in which x=12 and y=30

HOPE IT IS USEFUL

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