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hoa [83]
1 year ago
9

PLEASE HELP W THIS MATH QUESTION. correct answers only please​

Mathematics
1 answer:
bezimeni [28]1 year ago
7 0

The values of x are x₁ ≈ 4.8 and x₂ ≈ - 0.8.

<h3>What is the quadratic equation behind two circular sections of equal area?</h3>

Herein we have two <em>circular</em> sections of equal area, whose expressions are described by the following geometric equations:

Semicircle

A = 0.5π · x²     (1)

Half Semicircle

A = 0.25π · (x + 2)²      (2)

By equalizing (1) and (2):

0.5π · x² = 0.25π · (x + 2)²  

2 · x² = (x + 2)²  

2 · x² = x² + 4 · x + 4

x² - 4 · x - 4 = 0

x² - 4 · x + 4 = 8

(x - 2)² = 8

x - 2 = ±√8

x = 2 ± √8

x = 2 ± 2√2

x = 2 · (1 ± √2)

x = 2 · (1 ± 1.41)

x₁ = 2 · 2.41   ∨   x₂ = 2 · (- 0.41)

x₁ = 4.82   ∨   x₂ = - 0.82

The values of x are x₁ ≈ 4.8 and x₂ ≈ - 0.8.

To learn more on quadratic equations: brainly.com/question/17177510

#SPJ1

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svetoff [14.1K]

Answer:

Step-by-step explanation:

A

The marble is red. There are 6 red marbles out of ten. So the answer is

6/10 = 0.60

B

Red: 1 3 5

Blue: 1 3

So there are 5 ways that you can draw an odd number. The problem is that they are not evenly distributed.

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Blue: 1/2 * 2/4 = 0.25

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You could have gotten 1/2 by taking 5/10 but that won't always work.

C

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3 years ago
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pochemuha

     •   f(x) = 3x + 4

     •   g(x) = 8x + 1


Sum both functions above:

     (f + g)(x) = f(x) + g(x)

     (f + g)(x) = (3x + 4) + (8x + 1)

     (f + g)(x) = 3x + 8x + 4 + 1

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Therefore,

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     (f + g)(0) = 0 + 5

     (f + g)(0) = 5   <———   this is the answer.


I hope this helps! =)

3 0
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Answer:

4.) 7.03

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3 years ago
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