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3 years ago

The first term of a geometric sequence is 5 and the common ratio is 2 what is the fourth term of the sequence?

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

5 0

Answer:

the answer is a

Step-by-step explanation:

5*2 is 10

10*2 is 20

20*2 is 40

5,10,20,40

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astra-53 [7]

Answer:

the temperature is 58⁰F

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3 years ago

Solve 2x2 + 12x - 14 = 0 by completing the square

vovangra [49]

Answer:

Step-by-step explanation:

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4 years ago

Yalll n-4 = 3n + 6 do me a favah

Otrada [13]

<h2>Answer:</h2><h2>n=-5</h2>

n-4=3n+6

n−4=3n+6

Solve

Add

to both sides of the equation

−

n-4=3n+6

n−4=3n+6

−

n-4+{\color{#c92786}{4}}=3n+6+{\color{#c92786}{4}}

n−4+4=3n+6+4

Simplify

Subtract

from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

5 0

3 years ago

Read 2 more answers

Choose the correct answer. what is the value of d + e when d = 11 and e = -8

devlian [24]

11-8= 3

Hope this helps!

8 0

3 years ago

A consumer group selected 100 different airplanes at random from each of two large airlines. The mean seat width for the 100 air

Novay_Z [31]

Answer:

Decreasing the sample size decreases the width of the confidence interval.

Step-by-step explanation:

-Let s be the sample standard deviation and $\bar X$ be the sample mean.

#We calculate the 95% confidence interval for the sample size 100 as below:

$\bar X\pm z_{0.05/2}\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm 1.960\times\frac{s}{\sqrt{50}}\\\\\\=\bar X\pm 0.1960s$

#we then calculate the confidence interval of sample size =50 and of similar mean and standard deviation:

$\bar X\pm z\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm z_{0.05/2}\times\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm1.960\times \frac{s}{\sqrt{50}}\\\\\\\\=\bar X\pm0.2772s$

#Notice that the smaller sample(n=50) has a narrower confidence interval.

Hence, decreasing the sample size decreases the width of the confidence interval.

6 0

3 years ago

Read 2 more answers