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eimsori [14]
3 years ago
5

What is the equation of a circle with a center located at (4, -1) and a radius of 9?

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0

Answer:

(x-4) ^2 + (y+1)^2 = 81    

Step-by-step explanation:

The equation of a circle is given by

(x-h) ^2 + (y-k)^2 = r^2  where (h,k) is the  center and r is the radius

(x-4) ^2 + (y--1)^2 = 9^2

(x-4) ^2 + (y+1)^2 = 81      

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3 years ago
first person who answer correctly gets a brainllest The perimeter of a rectangle is 64 feet. The length of the rectangle is 3 ti
anastassius [24]

Answer:

2(3(8))+2(8)=64

Step-by-step explanation:

Here, w represents the width of the rectangle,

∵ length of the rectangle is 3 times the width of the rectangle,

So, length = 3w,

Since, the perimeter of a rectangle, P = 2(length + width)

= 2(w + 3w)

= 2w + 2(3w)

If P = 64 feet,

⇒ 2w +2(3w) = 64

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⇒ 8w = 64

⇒ w = 8

Verification :

P = 2(8) + 2((3(8)) = 16 + 48 = 64 feet

Hence, the first step that should be taken to verify that the width of the rectangle is 8 is 2(3(8))+2(8)=64

Note : a solution obtain from an equation is verified by substituting the value in the equation.

6 0
3 years ago
Use addition to solve the linear system of equations. 
Ipatiy [6.2K]
I'm not quite sure if this is what you need, but I am going to solve these equations by elimination. x= 8/17 and y = 11/17 (8/17, 11/17). 
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3 years ago
Randi scored r points at a basketball game.
steposvetlana [31]

Answer:

b,f

Step-by-step explanation:

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f: so the equation is 3+r=s,

so input values

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6 0
2 years ago
The radius of circle L is 22 cm. What is the length of its diameter?
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Diameter = Radius * 2
Radius = Diameter/2

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6 0
3 years ago
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