3 years ago

What is the sum of the first 20 terms of a finite geometric series where a1 =3 and r = 3/2

Mathematics

1 answer:

Svetllana [295]3 years ago

8 0

Answer: The answer should be 6

Step-by-step explanation:

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A toy manufacturer wants to know how many new toys children buy each year. A sample of 601 children was taken to study their pur

Lilit [14]

Answer:

The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

Standard deviation σ = 1.5

The z-score for a 95% confidence interval is 1.96.

The limits of the confidence interval can be calculated as

$X \pm z*\frac{\sigma}{\sqrt{n}}\\\\LL=X-z*\frac{\sigma}{\sqrt{n}}=6.7-1.96*\frac{1.5}{\sqrt{601} } =6.7-0.1199=6.6\\\\UL=X+z*\frac{\sigma}{\sqrt{n}}=6.7+1.96*\frac{1.5}{\sqrt{601} } =6.7+0.1199=6.8$

The confidence interval is 6.6<μ<6.8.

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3 years ago

HeLp Me pLeASe its due today!!!

Anarel [89]

Answer:

Should have paid attention in class

Step-by-step explanation:

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3 years ago

John earns $6000. He spends $1000 on rent, $1500 on grocery, $500 on travel and saves the rest. What size angle should be drawn

Arada [10]

Answer:

$3000

Step-by-step explanation:

6000-1000-1500-500= $3000

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3 years ago

ms. cox and her three friends are dining at a restaurant. the food they order cost %80. the bill includes an additional 15% serv

zlopas [31]

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2 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B33%7D%7B4-%5Csqrt%7B5%7D%20%7D" id="TexFormula1" title="\frac{33}{4-\sqrt{5} }" alt=

kvv77 [185]

The answer I got was: 12 + 3/5

Sorry I didn’t have that symbol thing on my phone so i had to use a slash.
Hope this helps :)

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3 years ago