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Sati [7]
3 years ago
15

Is the sequence -2, -10, -50, -250 arithmetic?

Mathematics
1 answer:
Elena L [17]3 years ago
7 0

This is not an arithmetic sequence.

It does not go up or down by the same amount each time.


It is a geometric sequence

it is multiplied by 5 each time

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Answer:

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Step-by-step explanation:

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( C: S )  Counselors : Students   is  4   :  57

( T: C )  Teachers :   Counselors  is  3   :  5

To determine the ratio of   -  Students : Counselors : Teachers

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Multiplying both sides by 5, we get

C: S  = 4 x 5  : 57 x 5  = 20 : 285

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Similarly, given   Teachers :   Counselors  is  3   :  5

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Inverting the values

⇒  S : C  = 285 : 20         and C : T  = 20 : 12

or, S : C : T  = 285: 20 : 12

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Hence, for every 285 students there are 20 counselors and 12 teachers.

4 0
3 years ago
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