2 years ago

What’s the answer I need it ASAP

Mathematics

1 answer:

mestny [16]2 years ago

3 0

Answer:

(3) HL is an angle bisector.

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The first number is 5 less than 3 times the second number. Twice the first number plus the second number is 137. Find the two nu

Irina-Kira [14]

5-3+10+137 10 and 137 are your numbers hope this helped

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3 years ago

Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Bingel [31]

Answer:

We need a sample size of at least 719

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 margin of error M as such

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

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

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when $M = 0.3, \sigma = 4.103$ . So

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

$0.3 = 1.96*\frac{4.103}{\sqrt{n}}$

$0.3\sqrt{n} = 1.96*4.103$

$\sqrt{n} = \frac{1.96*4.103}{0.3}$

$(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}$

$n = 718.57$

Rouding up

We need a sample size of at least 719

6 0

2 years ago

Im timed make it quick

erica [24]

Answer:

i think its a

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What two numbers multiply together to equal -15 and add together to equal -14?

4vir4ik [10]

Answer:

-15 and 1

Step-by-step explanation:

-15x1=-15

-15+1= -14

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2 years ago

Day 1 =1 rose, day2 = 6 roses How many on day 34?

Readme [11.4K]

204, because each day 6 goes up, so 34 x 6 = 204. Hope this helps :)

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2 years ago