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Ghella [55]
2 years ago
15

How to write an equation in standard form for a circle of other radius 3 centered at the origin

Mathematics
2 answers:
natali 33 [55]2 years ago
5 0

Answer:

from \: general \: equation \\  {x}^{2}  +  {y}^{2}  + 2gx + 2fy + c = 0 \\ at \: the \: origin \:  \: g = 0 \: and \: f = 0 \\since \: c =  {g}^{2}  +  {f}^{2} +  {r}^{2}  \\ whe re \: r \: is \: radius \\  therefore \: c =  {3}^{2}  = 9 \\  =  >  {x}^{2}  +  {y}^{2}  + 9 = 0

Y_Kistochka [10]2 years ago
3 0

Answer:

What is the diameter of a circle if the radius is 3

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A B C D which is the best answer​
ZanzabumX [31]
A is a good answer because yes
7 0
2 years ago
Write an equation for the translation of x^2 + y^2 = 49 by 7 units right and 4 units up
Tatiana [17]

Answer:

(x - 7)² + (y - 4)² = 49

Step-by-step explanation:

Given

Equation: x² + y² = 49

Required:

New Equation when translated 7 units right and 4 units up

Taking it one step at a time.

When the equation is translated 7 units right, this implies a negative unit along the x axis.

The equation becomes

(x - 7)² + y² = 49

When the equation is translated 4 units up, this implies a negative unit along the y axis.

(x - 7)² + (y - 4)² = 49

The expression can be further simplified but it's best left in the form of

(x - 7)² + (y - 4)² = 49

8 0
3 years ago
The statue of liberty is 305 feet tall. A nearby building is 4/9 as tall. Find the height of the building.
inysia [295]

Answer:

The nearby building is 135 \dfrac{5}{9} feet tall.

Step-by-step explanation:

The statue of liberty is 305 feet tall.

A nearby building is \dfrac{4}{9} as tall as the statue of liberty.

To find the height of the building, you need to find \dfrac{4}{9} of 305:

\dfrac{4}{9}\cdot 305=\dfrac{1,220}{9}= 135 \dfrac{5}{9}\ feet

Thus, the nearby building is 135 \dfrac{5}{9} feet tall.

5 0
3 years ago
The volume of a sphere is 5000 pi m^3 what’s the surface area of the sphere
VMariaS [17]
Volume of sphere is given by:
V=4/3πr³
the radius of the sphere will therefore be given by:
5000π=4/3πr³
solving for r we get:
r³=3750
hence
r=15.54 m
the area will therefore be:
A=4πr²
A=4π(15.54)²A=965.49π m²
8 0
3 years ago
Read 2 more answers
In math, do you still distribute even the number is behind the parentheses?
padilas [110]
The answer is YES!
You’re gonna have 10x+15+23
Then 10x + 38
And then you are doing next (2x+3) •5 + 23
So you have 2(5x+19)
8 0
2 years ago
Read 2 more answers
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