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valina [46]
3 years ago
8

Wat is the answer to 1.8+7n=9.5-4n

Mathematics
2 answers:
marin [14]3 years ago
5 0
1,8+7n=9,5-4n\ \ \ \ |Add\ 4n\ to\ each\ side\\\\
1,8+11n=9,5\ \ \ \ |Subtract\ 1,8\\\\
11n=7,7\ \ \ |Divide\ by\ 11\\\\
n=0,7\\\\Solution\ is\ n=0,7.
Jobisdone [24]3 years ago
4 0
The answer (usually called the 'solution') is the one and only number that 'n' can be if that equation is a true statement.  Here's a suggestion of a procedure you can use to find it:

<u>1.8 + 7n  =  9.5 - 4n</u>

Add  4n  to each side:               1.8 + 11n  =  9.5

Subtract  1.8  from each side:      11n  =  7.7

Divide each side by  11 :              <em>  n  =  0.7</em>
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The area of the regular octagon is approximately 54 cm2. A regular octagon has an apothem with length 4 centimeters and an area
ExtremeBDS [4]

Answer:

The length of line segment AB = 3.4 cm.

Step-by-step explanation:

Given:

The area of the regular octagon is approximately = 54 cm²

A regular octagon has an apothem with length =  4 cm

AB = side of the octagon

To Find:

AB = side of the octagon = ?

Solution:

A regular octagon has an Eight  equal Side

We Know that,

\textrm{area of regular octagon}=\textrm{Perimeter}\times \frac{Apothem}{2}

substituting the given values in equation we get

54 = Perimter\times \frac{4}{2}\\ \\\therefore Perimeter=\frac{54}{2}\\ \\\therefore Perimeter = 27\ cm\\

Now,

     Perimeter = 8 × Side

∴    Perimeter = 8 × AB

∴               27  = 8 × AB

∴    AB =\frac{27}{8}\\ \\\therefore AB =3.375\ cm\\\\

After rounded to nearest 10th we get

AB =3.4 cm

The length of line segment AB = 3.4 cm.

6 0
4 years ago
Read 2 more answers
the volume of a gas varies inversely as the pressure upon it. if the volume of the gas is 160 cubic centimeters at a pressure of
marin [14]
It was stated in the problem that a given volume of a is inversely proportional with the pressure of the system. It means that the as the volume increases, the pressure would decrease and as the volume decreases, the pressure would increase. We would express it as:

V α 1/P

To change it to an equality, we introduce a proportionality constant, k. We do as follows:

V = k/P

So, to determine what is asked, we need to first calculate for the value of k.

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At V = 160 m^3 P = 108 cmHg
160 = k / (108)
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Thus, at P = 87 cmHg 
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3 years ago
• Check your work when you're done.
Triss [41]
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2/5-answer☺️
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3 years ago
Which of the following is Not a true statement about absolute value? A. Absolute value is always positive B.The absolute value i
Svet_ta [14]
B is not true.

The absolutely value of zero is just zero. A and C are both saying the same thing really, just worded differently.

You left out an option D, but regardless B is untrue.
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sladkih [1.3K]

Answer:

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