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igor_vitrenko [27]
3 years ago
15

Please make an explanation, I haven’t learned much on this before

Mathematics
1 answer:
Montano1993 [528]3 years ago
3 0

Answer:

Triangle: 4

Trapezoid: 3.8

Step-by-step explanation:

All you need to find is what of the three or four adds to the perimeter

3+5 is 8

So 12-8 is 4

So the ? is 4

8.3 plus 3.8 plus 8.3 is 20.4

24.2-20.4 is 3.8

Hope this helps!

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<h3>to find:</h3>

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v =  \frac{4}{3}  \times \pi \times  {8}^{3}

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1 year ago
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4 0
3 years ago
What an equation that has the given solutions <br><br> -4,3
Stella [2.4K]

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(x+4)(x-3)

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6 0
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Liono4ka [1.6K]

Answer:

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8 0
3 years ago
WILL GIVE BRAINLIEST
FromTheMoon [43]
\bf \stackrel{\textit{testing for the x-axis symmetry, }\theta =-\theta }{r=8cos(3\theta )\implies r=8cos[3(-\theta)]}\implies r=8cos(-3\theta)&#10;\\\\\\&#10;r=8cos(3\theta)~~\boxed{\checkmark}~~\impliedby \stackrel{\textit{trigonometry symmetry identities}}{cos(\theta)=cos(-\theta)}\\\\&#10;-------------------------------

\bf \stackrel{\textit{testing for the y-axis symmetry, }\theta =\pi -\theta }{r=8cos(3\theta )\implies r=8cos[3(\pi -\theta)]}\implies r=8cos(3\pi -3\theta)\boxed{\otimes}\\\\&#10;-------------------------------\\\\&#10;\stackrel{\textit{testing for the origin symmetry, }\theta =\pi +\theta }{r=8cos(3\theta )\implies r=8cos[3(\pi +\theta)]}\implies r=8cos(3\pi +3\theta)\boxed{\otimes}

so as you can see, since the x-axis test yielded the same original expression, it has symmetry with the x-axis, or namely the "polar axis".
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3 years ago
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