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3 years ago

What equation results from completing the square and then factoring?

Mathematics

1 answer:

Vinil7 [7]3 years ago

6 0

Answer:

$\large\boxed{D.\ (x-4)^2=55}$

Step-by-step explanation:

$(a-b)^2=a^2-2ab+b^2\qquad(*)\\\\\\x^2-8x=39\\\\x^2-2(x)(4)=39\qquad\text{add}\ 4^2=16\ \text{to both sides}\\\\\underbrace{x^2-2(x)(4)+4^2}_{(*)}=39+16\\\\(x-4)^2=55$

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Reptile [31]

6 1/25 is the answer

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3 years ago

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QveST [7]

Percent means parts out of 100
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'of' means multiply
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tiny-mole [99]

Answer:

Yes, he will have enough 3 over 8 ft pieces for his class.

Step-by-step explanation:

Given:

Number of wood required = 22

Length of each wood, $l=\frac{3}{8}\textrm{ ft}$

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Therefore, the number of woods that can be made using the given board is given as:

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So, he can make 24 woods of length $\frac{3}{8}\textrm{ ft}$ using the 9 ft board. But he has to make only 22 pieces.

Therefore, he has enough of the wood to make the required number of pieces.

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aksik [14]

Answer:

its 60. u gotta know this stuff man

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4 years ago

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Answer:

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