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klemol [59]
3 years ago
7

-6n+5=59 can someone plz tell me what this is

Mathematics
2 answers:
posledela3 years ago
8 0

Answer:

-6n + 5 = 59

-6n = 54

n = -9

Bumek [7]3 years ago
8 0

Answer: n = -9


Step-by-step explanation: you subtract the 5 from both sides leaving the equation to -6n=54. then you divide both sides by -6 leaving it with n = -9


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COMPLETE<br> Find the value of the function for O.<br> sin(45°) = ?
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Answer:  \sqrt{2}/2 which is Choice B

This is the same as writing \frac{\sqrt{2}}{2}

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==========================================================

Explanation:

Refer to the unit circle below. I've highlighted the angle 45 degrees and its corresponding sine value. It's the y coordinate of the point on the unit circle, for this particular angle.

Therefore, \sin(45^{\circ}) = \frac{\sqrt{2}}{2}

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You could alternatively draw out a 45-45-90 triangle. Let x be the leg length and the hypotenuse is 1 unit long. Solve x^2+x^2 = 1 for x and you should get x = \frac{\sqrt{2}}{2} as the length of each leg.

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6 0
2 years ago
Show that (3+4)2−(3−4)2−(4)(4)=32
tatuchka [14]

Answer:

Explanation below

Step-by-step explanation:

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Sorry if this seems a bit confusing, but its quite hard to show the process without paper.

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3 years ago
A square steel bar has a length of 5.1 ft and a 2.7 in by 2.7 in cross section and is subjected to axial tension. The final leng
Andrej [43]

Answer:

The Poisson's ratio for the material is 0.0134.

Step-by-step explanation:

The Poisson's ratio (\nu), no unit, is the ratio of transversal strain (\epsilon_{t}), in inches, to axial strain (\epsilon_{a}), in inches:

\nu = -\frac{\epsilon_{t}}{\epsilon_{a}} (1)

\epsilon_{a} = l_{a,f}-l_{a,o} (2)

\epsilon_{t} = l_{t,f}-l_{t,o} (3)

Where:

l_{a,o} - Initial axial length, in inches.

l_{a,f} - Final axial length, in inches.

l_{t,o} - Initial transversal length, in inches.

l_{t,f} - Final transversal length, in inches.

If we know that l_{a,o} = 61.2\,in, l_{a,f} = 61.235\,in, l_{t,o} = 2.7\,in and l_{t,f} = 2.69953\,in, then the Poisson's ratio is:

\epsilon_{a} = 61.235\,in - 61.2\,in

\epsilon_{a} = 0.035\,in

\epsilon_{t} = 2.69953\,in - 2.7\,in

\epsilon_{t} = -4.7\times 10^{-4}\,in

\nu = - \frac{(-4.7\times 10^{-4}\,in)}{0.035\,in}

\nu = 0.0134

The Poisson's ratio for the material is 0.0134.

7 0
3 years ago
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