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vredina [299]
3 years ago
13

Can you help I’ll mark brainliest

Mathematics
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

Step-by-step explanation:

its 30

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There are 6 girls and 18 boys in a class. What percentage of the class are girls?​
grandymaker [24]

Answer:

25% are girls

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2 years ago
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I really don’t understand this and just need an explanation of how to do it.
sertanlavr [38]

\bf ~\hspace{12em}\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\cfrac{2n}{-3n\cdot -2n^2}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{-2n^2}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{2n\cdot -n}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{2n}\cdot \cfrac{1}{-n}


\bf \cfrac{1}{-3n}\cdot \boxed{1}\cdot \cfrac{1}{-n}\implies \cfrac{1}{-3n\cdot -n}\implies \cfrac{1}{3n^2}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4\implies \left( \cfrac{1}{3n^2} \right)^4\implies \stackrel{\textit{distributing the exponent}}{\cfrac{1^4}{3^4n^{2\cdot 4}}}\implies \cfrac{1}{81n^8}

7 0
2 years ago
Find x and y please!!! I need help!!
jonny [76]

Answer

Step-by-step explanation:

(15x-8y)=52

180=90+52+x

x=38

System of equations:

15x-8y=52

6x+14y=38

y=-6.5+15/8x

6x+14(-6.5+15/8x)=38

6x-91+26.25x=38

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y=1

x=4

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(-3)+y=(-3)
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So, x=(-3)
y=0
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3 years ago
The area of the octagon is how many meters squared?<br> Show your work.
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It’s 18 have a amazing day?????? yeah hah spring break
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