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VARVARA [1.3K]
3 years ago
5

Understanding quadrilateral

Mathematics
1 answer:
nlexa [21]3 years ago
3 0
A quadrilateral simply means a shape that has 4 straight sides. Imagine a square or rectangle - they are both quadrilaterals.
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100 and 50 is it two answers or just one? bc i’ll fix the answer
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PLS help.........................
miss Akunina [59]

Answer:

1. $3.65

2. 4th graph

3. y = 1/2x

Step-by-step explanation:

1.

10.95 ÷ 3 = 3.65

2.

The fourth option (one on the bottom) makes the most sense.

3.

Rise/Run

y = 1/2x

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Write a problem that can be solved with the equation r÷6=14 ????
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What are the roots of the equation 9x^2 + 54x +82 = 0 in simplest a + bi form?​
s344n2d4d5 [400]

Answer:

The roots are

<h3>x =  - 3 +  \frac{1}{3}  i \:  \:  \: or \:  \:  \: x =  - 3 -  \frac{1}{3} i \\</h3>

Step-by-step explanation:

9x² + 54x + 82 = 0

Using the quadratic formula

That's

<h3>x =  \frac{ - b\pm \sqrt{ {b}^{2}  - 4ac} }{2a}</h3>

From the question

a = 9 , b = 54 , c = 82

Substitute the values into the above formula and solve

That's

<h3>x =  \frac{ - 54\pm \sqrt{ {54}^{2}  - 4(9)(82)} }{2(9)}  \\ x =  \frac{ - 54\pm \sqrt{2916 - 2952} }{18}  \\ x =  \frac{ - 54\pm \sqrt{ - 36} }{18}  \\ x =  \frac{ - 54\pm 6i}{18}</h3>

Separate the real and imaginary parts

That's

<h3>x =  -  \frac{54}{18} \pm \frac{6}{18}  \: i \\ x =  - 3\pm \frac{1}{3} i</h3>

We have the final answer as

<h3>x =  - 3 +  \frac{1}{3}  i \:  \:  \: or \:  \:  \: x =  - 3 -  \frac{1}{3} i \\</h3>

Hope this helps you

5 0
3 years ago
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