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3 years ago

13

Cual es la diferencia entre circulo y circunferencia

1 answer:

NNADVOKAT [17]3 years ago

7 0

La diferencia entre circulo y circunferencia. Círculo y circunferencia no son lo mismo. Una circunferencia es el conjunto de puntos que equidistan (o sea: que están a la misma distancia) de un centro. Un círculo, en cambio, es el conjunto de puntos cuya distancia al centro es igual o menor que el radio.

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4+10 in distributive law

Anarel [89]

That would just be 14

6 0

3 years ago

Martin is covering his bathroom floor with square tiles. When he gets to the end of a row of tiles, he needs to cut the length o

kati45 [8]

All squares are equal sides.Let X be the side of a square. $\\$ Area of square,A = x^2

Here a tile is a square of side length 'x'. The following polynomial represents,

(x - 4) represents "the width of the new tile" (because 4 inches cut from the tile)

4x represents "the area removed from the tile" (since one side of removed tile is 'x' and other is 4 inches.)

x2 represents "area of original tile" of side equal to 'x'

x represents "the length of the new tile" (since length of new tile is not reduced. Length =x and breadth is x-4

6 0

3 years ago

Solve the following equation:

Rama09 [41]

Complete the square.

$z^4 + z^2 - i\sqrt 3 = \left(z^2 + \dfrac12\right)^2 - \dfrac14 - i\sqrt3 = 0$

$\left(z^2 + \dfrac12\right)^2 = \dfrac{1 + 4\sqrt3\,i}4$

Use de Moivre's theorem to compute the square roots of the right side.

$w = \dfrac{1 + 4\sqrt3\,i}4 = \dfrac74 \exp\left(i \tan^{-1}(4\sqrt3)\right)$

$\implies w^{1/2} = \pm \dfrac{\sqrt7}2 \exp\left(\dfrac i2 \tan^{-1}(4\sqrt3)\right) = \pm \dfrac{2+\sqrt3\,i}2$

Now, taking square roots on both sides, we have

$z^2 + \dfrac12 = \pm w^{1/2}$

$z^2 = \dfrac{1+\sqrt3\,i}2 \text{ or } z^2 = -\dfrac{3+\sqrt3\,i}2$

Use de Moivre's theorem again to take square roots on both sides.

$w_1 = \dfrac{1+\sqrt3\,i}2 = \exp\left(i\dfrac\pi3\right)$

$\implies z = {w_1}^{1/2} = \pm \exp\left(i\dfrac\pi6\right) = \boxed{\pm \dfrac{\sqrt3 + i}2}$

$w_2 = -\dfrac{3+\sqrt3\,i}2 = \sqrt3 \, \exp\left(-i \dfrac{5\pi}6\right)$

$\implies z = {w_2}^{1/2} = \boxed{\pm \sqrt[4]{3} \, \exp\left(-i\dfrac{5\pi}{12}\right)}$

3 0

1 year ago

A TV's regular price is $349. It is on

Nata [24]

Answer:

rounded is $207.66

Step-by-step explanation:

you start by doing 349(0.30) which would be 104.7

349-104.7=244.3

next you do 244.3(.15)=36.645

244.3-36.645= $207.655

4 0

2 years ago

Read 2 more answers

Can someone please help me with this

makvit [3.9K]

11 donuts i believe :)

3 0

2 years ago