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3 years ago

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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What is the volume of a sphere with a radius of 8 m, rounded to the nearest tenth of a cubic meter?

zlopas [31]

<h3>given:</h3>

radius= 8 m

the volume of the sphere

<h3>solution:</h3>

$v = \frac{4}{3} \pi {r}^{3}$

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

$v = 2144.66058 \: {m}^{3}$

$v = 2144.7 \: {m}^{3}$

therefore, the volume of the given sphere is 2144.7 cubic meters.

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1 year ago

What does c and h mean in the system of equation, 34.50=4h+7c and 30.50=8h+3c

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3 years ago

What an equation that has the given solutions -4,3

Stella [2.4K]

Answer:

(x+4)(x-3)

Step-by-step explanation:

x^2+x-12

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3 years ago

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-3m-1<-10 or -4+2m<-14

Liono4ka [1.6K]

Answer:

m>3 or m<-5

Step-by-step explanation:

First simplify -3m-1 < -10:

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Then simplify -4+2m<-14:

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3 years ago

WILL GIVE BRAINLIEST

FromTheMoon [43]

$\bf \stackrel{\textit{testing for the x-axis symmetry, }\theta =-\theta }{r=8cos(3\theta )\implies r=8cos[3(-\theta)]}\implies r=8cos(-3\theta)
\\\\\\
r=8cos(3\theta)~~\boxed{\checkmark}~~\impliedby \stackrel{\textit{trigonometry symmetry identities}}{cos(\theta)=cos(-\theta)}\\\\
-------------------------------$

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

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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