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Ede4ka [16]
3 years ago
7

What number must you add to complete the square? x^2 + 8x = -3

Mathematics
1 answer:
KonstantinChe [14]3 years ago
5 0
<span>x^2 + 8x = -3
</span><span>x^2 + 8x + 16 = -3 + 16
using a^2 + 2 a b + b^2 = (a+b)^2
</span><span>
</span>x^2 + 8x + 16 = 13

<span>(x +4)^2 = 13

answer : 16 is the number </span><span>you must add to complete the square</span>
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0.500000000000000000000000 as a fraction
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Determine whether the relation is a function. Explain why or why not.
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Answer: THE ANSER IS A. No, the domain value 5 corresponds to two range values, -8 and 5.

Find the domain and range.

Domain:

{ 6 ,  5  , 1 }

Range:

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Step-by-step explanation: IT'S NOT C OR D

Determine if the relation is a function.

The relation is not a function.

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3 years ago
Christian wants to make an A in his class. There are 5 exams this year, and he has taken 4 of them. His grades were 84, 88, 95,
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Answer:

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Step-by-step explanation:

(84/5)+(88/5)+(95/5)+(104/5)+(x/5) ≥ 90

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Subtract (371/5) from both sides

Then you have (x/5) ≥ (79/5)

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Answer:

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x% confidence interval:

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In this question:

95% confidence interval is (0.53, 0.59).

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2 years ago
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