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evablogger [386]
2 years ago
5

What equation results from completing the square and then factoring?

Mathematics
1 answer:
Vinil7 [7]2 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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Answer:

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Step-by-step explanation:

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3 0
2 years ago
Which of the following is the definition of a rational number? a number that can be written as a nonterminating or nonrepeating
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7 0
3 years ago
In general, after a group makes a reservation at a restaurant, they do not show up 20% of the time. If a restaurant has 8 reserv
sashaice [31]

Answer:

P(more than 2 don't show up)=0.2031

Step-by-step explanation:

Multiplication rule for independent events:

If two events A and B are independent then the multiplication rule state that:

P(A and B)= P(A) x P(B)

Find the probability that more than two do not show up:

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P(more than 2 don't show up)= 1- P(less than or equal to 2 don't show up)

= 1-( P(none show up) +P(one don't show up)+P(two don't show up)

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=1- (0.1678 +0.3355+0.2936)= 1-0.7969

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5 0
3 years ago
Which statement is true about slope of the graphed line?
meriva

Answer:

A. the slope is negative

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
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