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strojnjashka [21]
3 years ago
10

Identify the number as real, complex, pure imaginary, or nonreal complex. (More than one of these descriptions may apply.) -9i

Mathematics
1 answer:
Agata [3.3K]3 years ago
8 0

Answer:

Step-by-step explanation:

Me no hablas Inglish sorry pal

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If (-1,4) and (3,-2) are end points of diameter of the circle, then the equation of the circle is
Volgvan

Answer:

If you've more doubts you can ask :)

Step-by-step explanation:

If the centre of a circle is (a, b) and radius r, then the equation of the circle is :

(x - x)^2 + (y-b)^2 = r^2

<em><u>First we will find the centre, (a , b): </u></em>

<em><u /></em>a = \frac{3+(-1)}{2} = \frac{2}{2} = 1\\\\b = \frac{-2 + 4}{2} = \frac{2}{2} = 1<em><u /></em>

<em><u>Find radius:</u></em>

Radius, r = \frac{Diameter}{2}

Diameter is the distance between (-1, 4) and (3, -2)

diameter = \sqrt{(x_2 - x_1)^2 +(y_2-y_1)^2} \\\\

             = \sqrt{(3-(-1)^2 + (-2-4)^2} \\\\=\sqrt{16 + 36}\\\\=\sqrt{52}\\\\=\sqrt{4 \times 13}\\\\=2\sqrt{13}    \ units

Therefore , r = \frac{2 \times \sqrt{13} }{2} = \sqrt{13}  \ units

<em><u>Equation of the circle is :  </u></em>

                                 (x - 1)^2 +(y-1)^2 = 13<em><u></u></em>

4 0
3 years ago
10 + 6x + 2x - 7 = 35<br> Help me pls and ty
lutik1710 [3]

Answer:

<h2><em><u>x = 4</u></em></h2>

Explanation:

10 + 6x + 2x - 7 = 35

  • Add Similar Elements: 6x + 2x = 8x

10 + 8x - 7 = 35

  • Group Like Terms

8x + 10 - 7 = 35

  • Subtract: 10 - 7 = 3

8x + 3 = 35

  • Subtract 3 From Both Sides

8x + 3 - 3 = 35 - 3

  • Simplify

8x = 32

  • Divide Both Sides By 8

8x / 8 = 32 / 8

<h2><u><em>x = 4</em></u></h2>
6 0
3 years ago
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The length of a rectangle is 2 inches more than twice its width write an equation relating the length of the rectangle to its wi
Neko [114]
Length of Triangle= 2(W) +2

i dont know if im right or not.
4 0
3 years ago
The diameter of a circle is 9 ft. Find the circumference and round it to the nearest tenth.
marta [7]

Answer:

9*3.14=28.26

Step-by-step explanation:

Hope this Helps!

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Katha walks 5 blocks east. Then she walks straight back to where she started and walks 5 blocks west.
anyanavicka [17]

Answer:

5 is the point on the number line how far she walked east

0 is the point on the number line where she began walking

-5 is the point on the number line how far she walked west

Step-by-step explanation:

5 0
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