annarips05 annarips05
  • 07-07-2020
  • Mathematics
contestada

What is the radius of a circle whose equation is (x + 5)2 + (y – 3)2 = 42? 2 units 4 units 8 units 16 units

Respuesta :

erinna erinna
  • 12-07-2020

Answer:

Option B.

Step-by-step explanation:

The given equation is

[tex](x+5)^2+(y-3)^2=4^2[/tex]       ...(1)

The standard form of a circle is

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

where, (h,k) is center and r is radius of the circle.

On comparing (1) and (2) we get

[tex]h=-5,k=3,r=4[/tex]

It means center of the circle is (-5,3) and radius of the circle is 4 units.

Therefore, the correct option is B.

Answer Link
squidstertiktok
squidstertiktok squidstertiktok
  • 10-12-2020

Answer:

B) 4 units

Step-by-step explanation:

Edge 2020

Answer Link

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