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3 years ago

A bend used to clear an obstruction and return to the original line of run is called a(n)

2 answers:

8 0

I believe the correct answer from the choices listed above is the third option. A bend used to clear an obstruction and return to the original line of run is called a saddle. 

Hope this answers the question. Have a nice day.

Lilit [14]3 years ago

5 0

The correct answer is C) a saddle.

A bend used to clear an obstruction and return to the original line of run is called a saddle.

Saddles are very useful in electricity to hold cable rings. The system of cable rings and saddles are very important in electrical installations because they offer support for electrical cables with a durable, safe, and strong way.

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7p−9=−22 elp meh plz my dudes TwT

allochka39001 [22]

Step-by-step explanation:

7p-9= -22
8p=-22+9
8p= -13
p=-13/7

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3 years ago

A) Complete the table of values for y = 6 - 2x 0 1 2 3 4 5 -4

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

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3 years ago

PLEASE ANSWER THE QUESTIONS ASAP

wariber [46]

Not sure about the first one, The second one is 1/9.

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4 years ago

Test scores of the student in a school are normally distributed mean 85 standard deviation 3 points. What's the probability that

Mrrafil [7]

Answer:

The probability that a random selected student score is greater than 76 is $\\ P(x>76) = 0.99865$ .

Step-by-step explanation:

The Normally distributed data are described by the normal distribution. This distribution is determined by two parameters, the population mean $\\ \mu$ and the population standard deviation $\\ \sigma$ .

To determine probabilities for the normal distribution, we can use the standard normal distribution, whose parameters' values are $\\ \mu = 0$ and $\\ \sigma = 1$ . However, we need to "transform" the raw score, in this case x = 76, to a z-score. To achieve this we use the next formula:

$\\ z = \frac{x - \mu}{\sigma}$ [1]

And for the latter, we have all the required information to obtain z. With this, we obtain a value that represent the distance from the population mean in standard deviations units.

<h3>The probability that a randomly selected student score is greater than 76</h3>

To obtain this probability, we can proceed as follows:

First: obtain the z-score for the raw score x = 76.

We know that:

$\\ \mu = 85$

$\\ \sigma = 3$

$\\ x = 76$

From equation [1], we have:

$\\ z = \frac{76 - 85}{3}$

Then

$\\ z = \frac{-9}{3}$

$\\ z = -3$

Second: Interpretation of the previous result.

In this case, the value is three (3) standard deviations below the population mean. In other words, the standard value for x = 76 is z = -3. So, we need to find P(x>76) or P(x>-3).

With this value of $\\ z = -3$ , we can obtain this probability consulting the cumulative standard normal distribution, available in any Statistics book or on the internet.

Third: Determination of the probability P(x>76) or P(x>-3).

Most of the time, the values for the cumulative standard normal distribution are for positive values of z. Fortunately, since the normal distributions are symmetrical, we can find the probability of a negative z having into account that (for this case):

$\\ P(z>-3) = 1 - P(z>3) = P(z$

Then

Consulting a cumulative standard normal table, we have that the cumulative probability for a value below than three (3) standard deviations is:

$\\ P(z$

Thus, "the probability that a random selected student score is greater than 76" for this case (that is, $\\ \mu = 85$ and $\\ \sigma = 3$ ) is $\\ P(x>76) = P(z>-3) = P(z$ .