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ki77a [65]
3 years ago
14

40 points!!!! Will give Brainliest!!! Please need help!!!! ASAP!!! I need at least 3 sentences.

Mathematics
2 answers:
maw [93]3 years ago
5 0

Cubes have 6 total side. Four sides that connect the cube, and two for the top and bottom. We see here that we only have 5 sides, meaning that either the top or the bottom is missing (depending on how you look at it).

This prevents it from being a cube.

VLD [36.1K]3 years ago
3 0
It is not a cube because it has to look like a t, and it is missing a square on the side
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Step-by-step explanation:

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Which of the following methods would be the easiest to use to solve x2 + 5x – 6 = 0?
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For me personally, the easiest way to do this is by isolating the x² term, and finding the square root of both sides. The hardest way (well actually, the longest way) would be to use the quadratic formula. It just complicates things unnecessarily. 
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∫(cosx) / (sin²x) dx
kirza4 [7]
If you're using the app, try seeing this answer through your browser:  brainly.com/question/2822772

_______________


Evaluate the indefinite integral:

\mathsf{\displaystyle\int\! \frac{cos\,x}{sin^2\,x}\,dx}\\\\\\
=\mathsf{\displaystyle\int\! \frac{1}{(sin\,x)^2}\cdot cos\,x\,dx\qquad\quad(i)}


Make the following substitution:

\mathsf{sin\,x=u\quad\Rightarrow\quad cos\,x\,dx=du}


and then, the integral (i) becomes

=\mathsf{\displaystyle\int\! \frac{1}{u^2}\,du}\\\\\\
=\mathsf{\displaystyle\int\! u^{-2}\,du}


Integrate it by applying the power rule:

\mathsf{=\dfrac{u^{-2+1}}{-2+1}+C}\\\\\\
\mathsf{=\dfrac{u^{-1}}{-1}+C}\\\\\\
\mathsf{=-\,\dfrac{1}{u}+C}


Now, substitute back for u = sin x, so the result is given in terms of x:

\mathsf{=-\,\dfrac{1}{sin\,x}+C}\\\\\\
\mathsf{=-\,csc\,x+C}


\therefore~~\boxed{\begin{array}{c}\mathsf{\displaystyle\int\! \frac{cos\,x}{sin^2\,x}\,dx=-\,csc\,x+C} \end{array}}\qquad\quad\checkmark


I hope this helps. =)


Tags:  <em>indefinite integral substitution trigonometric trig function sine cosine cosecant sin cos csc differential integral calculus</em>

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3 years ago
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Answer:

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Step-by-step explanation:

y = ax − b

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y+b =ax

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7 0
2 years ago
Read 2 more answers
A line segment with length 6cm is dilated by a scale factor of 2/3. What is the length of the dilated segment? I don’t understan
rusak2 [61]

Answer:

10cm (I think)

Step-by-step explanation:

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4 +6 = 10

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