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3 years ago

What would the answer be

Mathematics

1 answer:

Reil [10]3 years ago

8 0

Answer:

28.28

Step-by-step explanation:

Using Pythagoras' identity on the right triangle

d² = 20² + 20² ← Pythagoras' identity

= 400 + 400 = 800 ( take the square root of both sides )

d = $\sqrt{800}$ ≈ 28.28 ( to 2 dec. places )

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Find an equation of the circle that satisfies the given conditions. (Use the variables x and y.)

prohojiy [21]

Answer:

$x^2 + y^2 = 52$

Step-by-step explanation:

Distance between two points:

Suppose that we have two points, $(x_1,y_1)$ and $(x_2,y_2)$ . The distance between them is given by:

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

Equation of a circle:

The equation of a circle with center $(x_0,y_0)$ and radius r has the following format:

$(x - x_0)^2 + (y - y_0)^2 = r^2$

Center at the origin;

This means that $x_0 = 0, y_0 = 0$

$(x - x_0)^2 + (y - y_0)^2 = r^2$

$(x - 0)^2 + (y - 0)^2 = r^2$

$x^2 + y^2 = r^2$

Passes through (4, 6)

The radius is the distance from this point to the center. So

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

$r = \sqrt{(4-0)^2+(6-0)^2}$

$r = \sqrt{16+36}$

$r = \sqrt{52}$

$r^2 = 52$

Then

$x^2 + y^2 = r^2$

$x^2 + y^2 = 52$

8 0

3 years ago

AYO CAN YALL HELP Me PLZZZZz IF U HELP WIT ALLL U GET BRAINLES

monitta

Answer:

The first one is B

Step-by-step explanation:

if you count how many faces or sides it has its 5

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Read 2 more answers

Use the card collection box-and-whisker plot to solve.

Klio2033 [76]

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4 years ago

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Mumz [18]

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3 years ago

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coldgirl [10]

Answer:

x = 2000

y = 30000

y-intercept = 30000

slope = 15

one point = (2000 , 30000)

that is as far as I got. Sorry that I couldn't help more. :C

Step-by-step explanation:

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3 years ago