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gizmo_the_mogwai [7]
3 years ago
15

Which of the following is a geometric series?

Mathematics
1 answer:
Alenkasestr [34]3 years ago
7 0
<h2>Answer:</h2>

The geometric series is:

               2+14+98+686

<h2>Step-by-step explanation:</h2>

The geometric series is a series in which each term of the series is a constant multiple of the preceding term of the series.

a)

6+13+20+27

This is not a geometric series but is a arithmetic series.

Since, each term is increased from the preceding term by 7.

Since, 6+7=13

13+7=20

20+7=27

b)

7+21+35+45

This is not a geometric  series.

Since 7×3=21

But 21×3=63

But the next term that is given is: 28 and not 63

c)

14+21+28+35

This is a arithmetic sequence.

Since

14+7=21

21+7=28

and 28+7=35

d)

2+14+98+686

This is a geometric sequence.

Since,. we get a common ratio i.e. a term which when multiplied to each term of sequence gives the next term of the series.

i.e. 2×7=14

14×7=98

98×7=686

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Black_prince [1.1K]

Answer:

C.

Step-by-step explanation:

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3 years ago
The ratio of girls to boys at a movie is 5 : 4. If there are 12 boys​, how many girls are at the​ movie?
dalvyx [7]

Answer:

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Step-by-step explanation:

8 0
3 years ago
A glass is 4/7 full. Then 70 cm³ orange juice is poured in. The glass is now 3/4 full.
Nataly_w [17]

Answer:

The volume of the glass is 217.8 cm³

Step-by-step explanation:

If the glass were initially 4/7 full, that means 3/7 of the volume is still available to hold more juice.

Let v represent the volume of the glass.  

Then (3/7)v + 70 cm³ = (3/4)v.

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Subtracting  (12/28)v from both sides, we get:

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We can isolate v by mult. both sides by the inverse of 9/28, which is 28/9:

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3 0
3 years ago
Read 2 more answers
59. What happens to the graph of y = |x| when the equation changes to y = |x + 4? A The graph shifts up 4 units. The graph shift
marishachu [46]

Answer: Graph shifts 4 units to the left

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I'm assuming you meant to say y = |x+4|

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Or you could look at the vertex point to see how it moves. On y = |x|, the vertex is at (0,0). It then moves to (-4,0) when we go to y = |x+4|

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Find how far the car can travel on one gallon of gas, by dividing total miles by number of gallons:

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