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Ostrovityanka [42]
3 years ago
9

1) A research team is planning to use an ice drill at the top of a glacier. The team plans to use the drill for 10 hours each da

y while the temperature is warmest. The drill's position will move 5 1/12
feet every hour it is used. Predict the change in the drill's position each day. Begin by making an estimate. About how much does the drill's position change in one day?
--65 feet
-50 feet
-5 feet
-2 feet
Mathematics
1 answer:
MaRussiya [10]3 years ago
7 0

Answer:

Answer is 50 trust me

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

When dealing with consecutive integers, it often simplifies the problem to work with their average value. We know the average value of the integers in this problem is the even integer between the middle two. We can call it x, and write the equation ...

  (x-3) +(x-1) +(x+1) +(x+3) = -72

This simplifies to ...

  4x = -72 . . . . . . . we knew this before we wrote the above equation, since the sum of 4 numbers is 4 times their average.

  x = -18 . . . . . . . . the middle number of the sequence

So, the numbers are:

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A more conventional approach is to define the variable as the integer at one end or the other of the sequence. If we make it be the lowest number, then the equation is ...

  (x) +(x +2) +(x +4) +(x +6) = -72

and that simplifies to ...

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Now, the other three numbers are found by adding 2, 4, and 6 to this one.

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Step-by-step explanation:

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