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4vir4ik [10]
3 years ago
6

How many orders are possible to view 6 videos from a stack of 8 videos?

Mathematics
1 answer:
irakobra [83]3 years ago
6 0

Answer:

28

Step-by-step explanation:

We know that ,

  • n C r = n! / ( n - r)! r!

  • 8! / ( 8 - 6)! 6!

  • 8! / 2! × 6!

  • 7 × 8 / 2 × 1

  • 28
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What is the decimal expansion of the fraction 7/9
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3 years ago
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How many solutions does the system have?<br> y=-2x -4 <br> y=3x + 3
baherus [9]

Answer:

x=−7/5and y=−6/5

Step-by-step explanation:

Step: Substitute−2x−4foryiny=3x+3:

y=3x+3

−2x−4=3x+3

−2x−4+−3x=3x+3+−3x(Add -3x to both sides)

−5x−4=3

−5x−4+4=3+4(Add 4 to both sides)

−5x=7

−5x

−5

=

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(Divide both sides by -5)

x=−7/5

7 0
3 years ago
Question is in the picture please help.
Mademuasel [1]

Answer: a

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8 0
3 years ago
The sum of two numbers is "-1" One number is 12 more than the other one. Find the numbers.
ruslelena [56]

Answer:

x = 5.5

y = - 6.5

Step-by-step explanation:

Let one of the numbers = x

Let the other number = y

x + y = - 1

x = y + 12    Put the second equation into the first one

y + 12 + y = - 1       Subtract 12 from both sides

y + y = - 1 - 12        Combine both left and right sides

2y = - 13                Divide by 2

2y/2 = - 13/1

y = - 6.5

x + y = - 1

x - 6.5 = - 1            Add 6.5 to both sides

x = 5.5

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3 years ago
Which inequality is true?
vovangra [49]

Answer:

D |-11 | >-25

Step-by-step explanation:

|-11 | = 11

11 > -25

3 0
3 years ago
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