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Finger [1]
2 years ago
7

pascal wanted the area of the door to be 54 square feet and the width still to be 2/3 the length. what would the dimensions of t

he floor be?
Mathematics
2 answers:
dlinn [17]2 years ago
8 0
The floor wood be 81 dimensions.
Nikolay [14]2 years ago
5 0
I think the width is 36 ft.
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Please Help! Brainliest Answer! Thank you
GrogVix [38]

Answer:

<h2>B.  27.73 ft.</h2><h2 />

Step-by-step explanation:

see attached image.

the distance between the two person standing on opposite

of a rectangular courtyard is by using Pythagorean theorem:

x² = 25² + 12²

x = \sqrt{625 + 144}

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4 0
3 years ago
What’s the area of the triangle ??
qaws [65]

Answer:

7²

Step-by-step explanation:

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6 0
3 years ago
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A geologist examines 14 geological samples for iron concentration. The mean iron concentration for the sample data is 0.181 cc/c
kykrilka [37]

Answer:

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

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{1-0.9}{2} = 0.05

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 1-0.05 = 0.95, so z = 1.645

Now, find 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.

M = 1.645*\frac{0.0318}{\sqrt{14}} = 0.0140

The lower end of the interval is the sample mean subtracted by M. So it is 0.181 - 0.0140 = 0.167 cc/m³.

The upper end of the interval is the sample mean added to M. So it is 0.181 + 0.0140 = 0.195 cc/m³.

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

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3 years ago
Which pair of expressions is equivalent?
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You’re answer is a
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3 years ago
C=3<br> c2 + 5 <br><br><br><br><br><br><br><br><br> ..............
vaieri [72.5K]

Answer:

3x2+5=11

Step-by-step explanation:

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