3 years ago

Pls help me on this!

Mathematics

1 answer:

salantis [7]3 years ago

5 0

Answer:

The answer is A

Step-by-step explanation:

You would measure earth's mass is kg and not in g , mg or mcg

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1.2, 3, 7.5, 18.75, ...<br><br> Which formula can be used to describe the sequence?

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Answer:

The formula is:

$a_n=1.2(\frac{5}{2})^{n-1}$

Step-by-step explanation:

The geometric sequences are those in which the division between the terms $a_{n + 1}$ and $a_n$ of the sequence are equal to a constant common reason called "r"

The geometrics secencias have the following form:

$a_n=a_1(r)^{n-1}$

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In this sequence we have the following terms

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Then notice that:

$\frac{3}{1.2}=\frac{5}{2}\\\\\frac{7.5}{3}=\frac{5}{2}\\\\\frac{18.75}{7.5}=\frac{5}{2}$

Then:

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Finally the formula is:

$a_n=1.2(\frac{5}{2})^{n-1}$

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3 years ago

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