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Solnce55 [7]
3 years ago
11

Is the sequence (a) (1.2,2.4,4.8,9.6. arithmetic, geometric, or neither? If arithmetic, identify the common difference, d. If th

e sequence is geometric, identify the common ratio, r.

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
8 0

Answer:

C) Geometric; r = 2

Step-by-step explanation:

The given sequence An = {1.2, 2.4, 4.8,9.6,...}

Geometric sequence is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

The given sequence is a geometric sequence. Because second term is first term multiplied by a constant 2.

The common ratio = 2.4/1.2  = 2

r= 2

Answer: C) Geometric; r = 2

Thank you.

borishaifa [10]3 years ago
4 0

Answer: (C) geometric, r = 2

<u>Step-by-step explanation:</u>

  • 1.2, 2.4, 4.8, 9.6
  •    ∨     ∨     ∨
  •   x2    x2   x2

Each term is multiplied by 2 to create the next term.  Multiplication makes this a geometric sequence. Since it is multiplied by 2, r = 2.

NOTE: If the terms were added, then it would be an arithmetic sequence.

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Which expression is equivalent to –5(6x – 3) – 4(–2x + 1) + 3(4x) – 8?
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2 years ago
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5. Melanie can run around the track 9 times
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A school has 63% percent girls and 37%, percent boys. If 23%, percent of the girls wears contacts and 42%, percent of the boys w
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Answer:

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37% are boys then total number of boys = ( 0.37)x

Now 23% of girls wear contacts then total number of girls

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= \frac{0.03003x}{x} × 100

= 30%

All 30% students wear contacts.

4 0
3 years ago
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