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White raven [17]
3 years ago
6

Please help me with this problem

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Diagonal = SQRT(8^2 + 12^2 + 30^2)

Diagonal = SQRT(64 + 144 + 900)

Diagonal = SQRT(1108)

Diagonal = 33.3 feet

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Simplify the rational expressions. X^2 - 16/ X^2 + 6x + 8
Yuki888 [10]

Answer:

\large\boxed{\dfrac{x-4}{x+2}}

Step-by-step explanation:

\dfrac{x^2-16}{x^2+6x+8}=\dfrac{x^2-4^2}{x^2+4x+2x+8}\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=\dfrac{(x-4)(x+4)}{x(x+4)+2(x+4)}=\dfrac{(x-4)(x+4)}{(x+4)(x+2)}\qquad\text{cancel}\ (x+4)\\\\=\dfrac{x-4}{x+2}

4 0
3 years ago
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Step-by-step explanation:


5 0
3 years ago
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2x + 3y =10<br>x + y = 3 please do workings asap
kompoz [17]
This is system of Equations. 
<span>2x + 3y =10
x + y = 3 
</span>
x + y = 3 (multiply this by three) to get 3x + 3y = 9
2x + 3y =10
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5 0
4 years ago
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Find the least common denominator for these two rational expressions 7/n^2 -8/7n
lianna [129]

Answer:

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Step-by-step explanation:

7/n² - 8/7n

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3 years ago
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Answer:

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Step-by-step explanation:

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