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garik1379 [7]
3 years ago
12

Help asap!!!!!!Order the number below from least to greatest

Mathematics
2 answers:
balu736 [363]3 years ago
7 0

Answer:

B.) -9/7, -1, 1/4, √7, 4.8

Step-by-step explanation:

Turn all the values into decimals first to make things easier:

1/4 = 0.25

-1 = -1

√7 = 2.7

4.8 = 4.8

-9/7 = -1.3

So, from least to greatest on a number line it'd be:

-1.3, -1, 0.25, 2.7, 4.8 or -9/7, -1, 1/4, √7, 4.8

OLEGan [10]3 years ago
6 0

Answer:

B.

Step-by-step explanation:

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A worn, poorly set-up machine is observed to produce components whose length X follows a normal distribution with mean 14 centim
Akimi4 [234]

Answer:

74.86% probability that a component is at least 12 centimeters long.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 14

Variance is 9.

The standard deviation is the square root of the variance.

So

\sigma = \sqrt{9} = 3

Calculate the probability that a component is at least 12 centimeters long.

This is 1 subtracted by the pvalue of Z when X = 12. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{12 - 14}{3}

Z = -0.67

Z = -0.67 has a pvalue of 0.2514.

1-0.2514 = 0.7486

74.86% probability that a component is at least 12 centimeters long.

6 0
3 years ago
Pls help what is this as a simplified fraction (thank u Jesus loves u)
Arte-miy333 [17]

Answer:

7.9 or 79/10

Step-by-step explanation:

-12.166 / -1.54

12.166 / 1.54

7.9

4 0
2 years ago
Read 2 more answers
Help please, i really need it because its almost due
nata0808 [166]

Answer:

D sqrt( A ) sqrt(pi) / pi = r

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

To find r

Divide each side of the equation by pi

A / pi = pi r^2 /pi

A / pi =  r^2

Take the square root of each side

sqrt(A / pi )= sqrt( r^2)

sqrt(A / pi )= r

We do not like leaving square roots in the denominator, so multiply by sqrt(pi)/sqrt(pi))

sqrt(A / pi ) *sqrt(pi)/sqrt(pi))

sqrt( A ) sqrt(pi) / pi = r

3 0
3 years ago
Read 2 more answers
Please be quick, i need this as soon as possible!
dalvyx [7]

Answer:

I’m pretty sure the answer is a

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What do 2psi mean in a math class
Snowcat [4.5K]
Psi stands for pounds per square-inch.
It is a measure of pressure, and is the equivalent pressure of putting one pound on a square-inch of area.
For example, someone weighing 180 pounds standing on his feet, with a footprint area of 72 square-inches would exert a pressure of 180 pounds/72 square inches = 2.5 pounds per square-inch, or 2.5 psi.

5 0
3 years ago
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