Ask question

Ask question

All categories

alexandr402 [8]

3 years ago

8

You are 200 yards from a river. Rather than walking directly to the river, you walk 400 yards along a straight path to the river

s edge. Find the acute angle between path and the rivers edge

1 answer:

monitta3 years ago

3 0

Answer:

The acute angle would be 30 degrees.

Step-by-step explanation:

You might be interested in

An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 1.6

nexus9112 [7]

Answer:

n=1705

Step-by-step explanation:

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma=1.6)$

And the distribution for $\bar X$ is:

$\bar X \sim N(\mu, \frac{1.6}{\sqrt{n}})$

We know that the margin of error for a confidence interval is given by:

$Me=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The next step would be find the value of $\z_{\alpha/2}$ , $\alpha=1-0.99=0.01$ and $\alpha/2=0.005$

Using the normal standard table, excel or a calculator we see that:

$z_{\alpha/2}=\pm 2.58$

If we solve for n from formula (1) we got:

$\sqrt{n}=\frac{z_{\alpha/2} \sigma}{Me}$

$n=(\frac{z_{\alpha/2} \sigma}{Me})^2$

And we have everything to replace into the formula:

$n=(\frac{2.58(1.6)}{0.1})^2 =1704.03$

And if we round up the answer we see that the value of n to ensure the margin of error required $\pm=0.1$ mm is n=1705.

6 0

3 years ago

HELP PLZ AGAIN. Same material. It is still timed. Will give 100 pts and brainly. This is vital to my math grade. Time is on the

ruslelena [56]

Answer:

y=4x+47

I wanted to wait for the person who originally said the answer but it's been a while and I kinda want the points. Sorry

6 0

3 years ago

Read 2 more answers

Jennifer has 14 coins that total $2.15. She only has dimes and quarters. If she only

MA_775_DIABLO [31]

hop in thei

dk the lyrics

3 0

3 years ago

Question 5 (Solving Problema) lon 5 Solving Problems] Write 24 18 in slmplest form

otez555 [7]

Answer:

4/3

Step-by-step explanation:

reduce the fraction by a factor of 6

pretty sure you mean write 24/18 in simplest form so that's the answer

Hope this helps! :)

8 0

2 years ago

If ten is no more than four times the sum of twice a number and three how do I write and work this for algebra

vagabundo [1.1K]

(2x+3)*4 is less than or equal to 10. For x, the number, you would get x is greater than or equal to -1/4.

7 0

3 years ago