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2 years ago

13

Consider the expression 21 - + ).

1 answer:

kogti [31]2 years ago

6 0

Subtraction is. Pemdas. Whichever comes first left to right is what you should do. In this case subtraction comes before addition, therefore subtraction is the right route

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The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.71 millimeters and a standard deviat

Harlamova29_29 [7]

Answer:

The bolts with diameter less than 5.57 millimeters and with diameter greater than 5.85 millimeters should be rejected.

Step-by-step explanation:

We have been given that the diameters of bolts produced in a machine shop are normally distributed with a mean of 5.71 millimeters and a standard deviation of 0.08 millimeters.

Let us find the sample score that corresponds to z-score of bottom 4%.

From normal distribution table we got z-score corresponding to bottom 4% is -1.75 and z-score corresponding to top 4% or data above 96% is 1.75.

Upon substituting these values in z-score formula we will get our sample scores (x) as:

$z=\frac{x-\mu}{\sigma}$

$-1.75=\frac{x-5.71}{0.08}$

$-1.75*0.08=x-5.71$

$-0.14=x-5.71$

$-0.14+5.71=x-5.71+5.71$

$5.57=x$

Therefore, the bolts with diameters less than 5.57 millimeters should be rejected.

Now let us find sample score corresponding to z-score of 1.75 as upper limit.

$1.75=\frac{x-5.71}{0.08}$

$1.75*0.08=x-5.71$

$0.14=x-5.71$

$0.14+5.71=x-5.71+5.71$

$5.85=x$

Therefore, the bolts with diameters greater than 5.85 millimeters should be rejected.

7 0

3 years ago

Identifying Relationships between Lines

denis-greek [22]

Answer:

1, 3, 5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP

Aneli [31]

Answer:

its is 192 I just took this assignment

3 0

3 years ago

The diagram shows a triangle.<br> 2x<br> 60°<br> 2x<br> What is the value of x?<br> Х=

FinnZ [79.3K]

2x+2x+60=180 because the angles have to add up to 180

So you have

4x+60=180

4x=120

x=30

3 0

3 years ago

Read 2 more answers

If the sum of the measure of two angles in a triangle is 101, then the measure

LiRa [457]

Answer:

79 degrees.

Step-by-step explanation:

It is just a rule of trigonometry that all the angles inside ANY triangle will add up to 180 degrees.

There's only 3 possible angles in a triangle, so if you know what the sum of 2 are, its easy to find the last one.

All you have to do is 180 - 101, which equals 79 degrees.

Hope this helped : )

5 0

3 years ago

Read 2 more answers