baybarger
baybarger baybarger
  • 01-08-2018
  • Mathematics
contestada

What is the center and radius of the circle with the equation (x - 2)2 + (y - 7)2 = 49

Respuesta :

a5904640
a5904640 a5904640
  • 01-08-2018

(x - 2)² + (y - 7)² = 49

(x - 2)² + (y - 7)² = 7²

We can say that the center is the opposite of the shown numbers, so if we see -2 in x, the center is 2 and -7 in y, the center is 7

C(2, 7) and r = 7

Answer Link
gmany
gmany gmany
  • 01-08-2018

The equation of a circle:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

(h, k) - coordinates of a center

r - a radius

We have:

[tex](x-2)^2+(y-7)^2=49[/tex]

Answer:

The center: (2, 7)

The radius: r² = 49 → r = √49 → r = 7

Answer Link

Otras preguntas

which inequality is equivalent to 7x-2y> 8. A) y> 7/2x+8 b) y>-2/7x+8/7 c) y <7/2x-4 d) y <-2/7x-4/7 (whats a Inequality? )
What challenges did the californios face?
What is the value of x in 15x-10= 20
how do u divide 16 by 3/5
7x+3y=22 4y=20 I need to know how to write this equation out with the answer
A ski jumper competing for an Olympic gold medal wants to jump a horizontal distance of 135 meters. The takeoff point of the ski jump is at a height of 25 meter
Tear is to sorrow as smile is to
What two factors determine the state of rocks and metals Inside the earth?
How many heart chambers does a shark have?
Identify the turning point of the function f(x)=x^2-2x+8 by writing its equation in vertex form. Show work