The electric circuit below consists of a battery a switch and three light bulbs

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

5 0

Your question makes no sense without the picture. Do you mind attaching a picture next time?

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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15

goblinko [34]

$a_n=5 \ for \ n=1 \\
a_n=-10 \ for \ n=2 \\
a_n=20 \ for \ n=3$

You can see it's a geometric sequence because the ratio is constant ( $\frac{a_3}{a_2}=\frac{a_2}{a_1}$ ).
The nth term of a geometric sequence:
$a_n=a_1 \times r^{n-1}$

$a_1=5 \\
r=\frac{a_2}{a_1}=\frac{-10}{5}=-2 \\ \\
a_n=5(-2)^{n-1}$

It has to be the sum for term 4 through term 15, so n=4 and the number above the sigma is 15.

Your answer:
$\sum^{15}_{n=4} 5(-2)^{n-1}$

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3 years ago

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Becca borrowed $220 from her cousin at the rate of 5.25% per year. If the inflation rate was 1.5% that year what is her cousins

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Does this graph show a function? Explain how you know.

liq [111]

The correct option regarding whether the graph shows a function is given by:

C. Yes; the graph passes the vertical line test.

<h3>When does a graph show a function?</h3>

In a function, one value of the input can be related to only one value of the output. Hence, in a graph, it means that for each value of x(horizontal axis), there can only be one respective value of y(vertical axis), which will mean that the graph will pass the vertical line test.

In this problem, the condition is respected, hence option C is correct.

More can be learned about functions at brainly.com/question/12463448

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(1/2) / (1/4) =
1/2 * 4 = 4/2 = 2 ....she needs to fill it 2 times

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3 years ago