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3 years ago

Suppose a geometric sequence has a common ratio of 5. What is the next term after 9?

Mathematics

1 answer:

creativ13 [48]3 years ago

8 0

Answer:

Step-by-step explanation:

$a_{n+1}=a_n\cdot r$

So, if the common ratio is 5 the next term is always 5 times the previous term.

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Name the 7 dwarfs 1st CORRECT one gets brain brain liest <3 ;)

Delvig [45]

Answer:

Grumpy, Dopie, Doc, Happy, Bashful, Sneezy and Sleepy.

Step-by-step explanation:

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3 years ago

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how many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98

Ber [7]

Answer:

We need to sample at least 37 weeks of data.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.01 = 0.99$ , so $z = 2.327$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

We want 98% confidence that the sample mean is within $500 of the population mean, and the population standard deviation is known to be $1300

This is at least n weeks, in which n is found when $M = 500, \sigma = 1300$

$M = z*\frac{\sigma}{\sqrt{n}}$

$500 = 2.327*\frac{1300}{\sqrt{n}}$

$500\sqrt{n} = 2.327*1300$

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Rounding up

We need to sample at least 37 weeks of data.

8 0

3 years ago

T m = the number of minutes it will take Beck to finish his homework. Choose the equation that can be used to find the solution

kramer

Answer:

$0.3 m = 12$

Step-by-step explanation:

See comment for complete question

Given

30% in 12 minutes

Required

Time to complete the homework

From the question: m represents the required minutes

This implies that:

$30\% * m = 12$

Convert to decimal

$0.30 * m = 12$

$0.3 m = 12$

Hence:

The equation is: $0.3 m = 12$

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3 years ago

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zaharov [31]

Answer:

4 meters

Step-by-step explanation:

Normally, 100 centimeters should be the normal meter length, but we multiply that by 4 and we get 400 centimeters

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3 years ago