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Yuki888 [10]
3 years ago
5

What’s the distance between (3.5, 1) and (-4, 2.5)

Mathematics
1 answer:
murzikaleks [220]3 years ago
7 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

distance =  \sqrt{ ({ - 4 - 3.5})^{2} +  ({2.5 - 1})^{2}  }  \\

distance =  \sqrt{ ({7.5})^{2} +  ({1.5})^{2}  }  \\

distance =  \sqrt{56.25 + 2.25}

distance =  \sqrt{58.5}

distance = 7.648

distance = 7.65

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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Find a polynomial with the following zeros. <br><br> HELPPPP ASAPPP
Pavlova-9 [17]

<u>Answer:</u>

x³ - 4x² + 2x + 4 = 0

<u>Here's how I solved this:</u>

<u>You start off by rewriting the zeros into factors:</u>

1 - √3    →    x = 1 - √3    →    (x - 1 - √3)

  2        →    x = 2           →    (x - 2)

1 + √3   →    x = 1 + √3   →    (x - 1 + √3)

<u>Now you want to multiply the factors together:</u>

     (x - 1 - √3) · (x - 2) · (x - 1 + √3)

<em>- Multiply the first two factors together -</em>

                (x - 1 - √3) · (x - 2)

                              ↓

    (x · x - x · 2 - √3 · x + √3 · 2 - x + 2)

 

<em>    - Combine like terms and simplify -</em>

    (x · x - x · 2 - √3 · x + √3 · 2 - x + 2)

                              ↓

          (x² - 3x - √3 · x + 2√3 + 2)

<em>       - Now multiply the third factor -</em>

   (x² - 3x - √3 · x + 2√3 + 2)(x - 1 + √3)

                              ↓

(x² · x + x² · √3 - x² - 3x · x - 3x · √3 + 3x - √3 · xx - √3 · x · √3 +√3 · x + 2 · √3 · x + 2 · √3 · √3 - 2 · √3 + 2x + 2 · √3 - 2)

                              ↓

(x³ + x² · √3 - x² - 3x² - 3x · √3 + 3x - √3 + 3x - √3 * x² - x · 3 + √3 · x + 2 · √3 · x + 2 · 3 - 2 × √3 + 2x + 2 √3 - 2)

<em>    - Combine like terms and simplify -</em>

(x³ + x² · √3 - x² - 3x² - 3x · √3 + 3x - √3 + 3x - √3 * x² - x · 3 + √3 · x + 2 · √3 · x + 2 · 3 - 2 × √3 + 2x + 2 √3 - 2)

                              ↓

                 x³ - 4x² + 2x + 4

--------------------------------------------------------------------------------------------------------------

And there we get our solution: <u>x³ - 4x² + 2x + 4</u>  

8 0
3 years ago
What is the result of subtracting the second equation from the first?
Mashcka [7]

Answer:

The result is that you eliminate the 7y term and thus can solve for x.

x = -28/3

y = 30/7

Step-by-step explanation:

-20 + 7y = 10

3x + 7y = 2

subtract... elimination method

-20 - 3x = 8

-3x = 28

x = -28/3

-20 + 7y = 10

7y = 30

y = 30/7

3 0
3 years ago
Read 2 more answers
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