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Margaret [11]
3 years ago
15

What is the missing number in this sequence? 3,7,15, 63, 127

Mathematics
1 answer:
miss Akunina [59]3 years ago
7 0

Answer:

31

Step-by-step explanation:

3 times 2 is 6, plus 1 is 7

7 times 2 is 14, plus 1 is 15

15 times 2 is 30, plus 1 is 31

31 times 2 is 62, plus 1 is 63

63 times 2 is 126, plus one is 127

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A movie streaming website charges an initial fee of $80, plus $4 for each movie that is streamed. How many movies must be stream
pochemuha

Answer:

80 movies must be streamed.

Step-by-step explanation:

To find the average cost, you must divide the total cost by the number of movies watched.

When you watch 1 movie, you pay the initial fee of $80 plus a $4 purchase of the film.

The equation is shown as such:

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Your total cost can be represented as 4x + 80, while the number of movies is represented as x.

You want the average to equal 5, so your equation is shown as follows:

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simplifying this, we get

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