3 years ago

Write 9.159 x 108 in decimal form.

Mathematics

1 answer:

Mars2501 [29]3 years ago

8 0

Answer: 989.172

Step-by-step explanation:

You might be interested in

It's nothing new: Let's recap rounding to the nearest 100.

Nuetrik [128]

Answer:

7000

61700

70300

Not sure tho.....

6 0

3 years ago

An ice cream factory makes 350 quarts of ice cream in 2 hours. How many quarts could be made in 36 hours? What was that rate per

lapo4ka [179]

Answer:

36 hours - 6,300

24 hours - 4,200

8 0

3 years ago

Question 34 please help me

tino4ka555 [31]

740 + 850 x 100=? And there!!

7 0

4 years ago

1- 4/5 divided by 2/3

Softa [21]

I hope this helps you

7 0

4 years ago

A Confidence interval is desired for the true average stray-load loss mu (watts) for a certain type of induction motor when the

Vaselesa [24]

Answer:

A sample size of 35 is needed.

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:

$\alpha = \frac{1-0.95}{2} = 0.025$

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 $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the width W as such

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

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large must the sample size be if the width of the 95% interval for mu is to be 1.0:

We need to find n for which W = 1.

We have that $\sigma^{2} = 9$ , then $\sigma = \sqrt{\sigma^{2}} = \sqrt{9} = 3$ . So

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

$1 = 1.96*\frac{3}{\sqrt{n}}$

$\sqrt{n} = 1.96*3$

$(\sqrt{n})^2 = (1.96*3)^{2}$

$n = 34.57$

Rounding up

A sample size of 35 is needed.

3 0

3 years ago