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tatiyna
3 years ago
8

5n2+100=30n , need help explaining how you would work this out

Mathematics
1 answer:
andreev551 [17]3 years ago
6 0

Answer:

n = 3 + i√11 ,  3 - i√11

Step-by-step explanation:

This is a quadratic equation  and the first step is to write it in standard form:

5n^2 - 30n + 100 = 0

Divide through by 5:

n^2 - 6n + 20 = 0

Completing the square:-

(n - 3)^2 - 9 + 20 = 0

(n - 3)^2 = -11

n - 3 = i√11 or - i√11

n = 3 + i√11 ,  3 - i√11

(2 complex roots).

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Andreyy89
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[For (3) and (4) we need to solve for slope]

(3)
First, solve for slope.
Formula for slope: \frac{y2-y1}{x2-x1}
Plug in values: \frac{-1-5}{-4-7} = - \frac{6}{11}
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(4)
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8 0
3 years ago
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Molodets [167]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:


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4 years ago
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In lines 4-5, the author refers to a "fashion maven’s"
xxTIMURxx [149]

In lines 4-5, the author refers to a "fashion maven’s" tone primarily in order to: imply that Genevieve has only a superficial appreciation of mechanical pencils (Option A).

<h3>What is comprehension passage?</h3>

Comprehension passages are sure-shot scoring questions. Even if the information in the passage deviates from actual events, it must be used to answer the questions.

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Answer:

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