What is the next number in the series? 5, 15, 10, 13, 15, 11, ___

1 answer:

5 0

If we take the sequence terms apart and write the odd-numbered terms (the first, third, fifth, etc) and the even-numbered terms (the second, fourth, sixth, etc) in own sequences we will get:
5 10 15
15 13 11
So, in the first sequence every term is obtained by adding five to the previous, and in the second sequence every term is obtained by subtracting 2 from the previous term. According to this logic, the next number in the series 5, 15, 10, 13, 15, 11, 20.

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Step-by-step explanation:

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2 years ago

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kvasek [131]

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Consider that AC acts as a transversal to the parallel lines AB and CD, so we can write,

$\begin{gathered} \angle CAD=\angle ACB\text{ (Alternate Interior Angles)} \\ BC=AD\text{ (Opposite sides of parallelogram)} \\ \angle ADB=\angle CBD\text{ (Alternate Interior Angles)} \end{gathered}$

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Hence Proved.

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1 year ago

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7nadin3 [17]

Hey there!!

Okay so here are the steps....

(5 + 2i) + (8 - 3i) <---- when we have exponents we should worry about the "i" because it is equal to √-1 but here it isn't the case.


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I hope this helps! ^__^

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3 years ago

Please help I don't understand!

coldgirl [10]

Answer:

Step-by-step explanation:

I believe because on the other side it is AE over ED so I just repeated the pattern.

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2 years ago

What does quadratic mean?

RSB [31]

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