All categories

2 years ago

The circle below is centered at the origin and has a radius of 4. What is its equation?

Mathematics

1 answer:

Alecsey [184]2 years ago

7 0

Answer:

C) x^2 + y^2 = 16

Step-by-step explanation:

<h2><u>Find the equation </u></h2>

since the radius is 4 this means that anywhere from the center of the circle to the edge of the circle is 4. hence :

place the horizontal line of the radius where y = 0 .

this means that if y = 0 , then x = 4

therefore :

x^2 + y^2

4^2 + 0^2

= 16

<h3><u>hence the answer is C ) x^2 + y^2 = 16</u></h3>

You might be interested in

PLEASE HELP ME OUT IM FAILING MATH‍♂️ Thx

OleMash [197]

Answer: -1 < x < 1

Step-by-step explanation: Solve for x.

Graph line is down below!

Hope this helps you out! ☺

-Leif-

3 0

2 years ago

diagrams are not drawn to scale. do numbers 10 and 12. i only care about the answers & the steps to get the answers. pls don

Stella [2.4K]

10. from the question; the circle theorem obeyed is "angled formed by semi-circle"

The angle formed in a semicircle is 90 degrees, hence

$m\angle XYZ=90^{\circ}$

This gives

$m\angle YXZ\text{ + m}\angle YZX\text{ = 90}$

But

$\begin{gathered} m\angle YXZ\text{ = 2x + 8} \\ m\angle YZX\text{ = 5X - 2} \end{gathered}$

Substituting values we get

$\begin{gathered} 2x\text{ + 8 + 5x - 2 = 90} \\ 2x\text{ + 5x + 8 - 2 = 90} \\ 7x\text{ + 6 = 90} \\ 7x\text{ = 90 -6} \\ 7x\text{ = 84} \\ \text{divide both sides by 7} \\ x\text{ = }\frac{84}{7} \\ x\text{ = 12} \end{gathered}$

hence, x =12

3 0

10 months ago

Please help.<br> Is algebra.

Airida [17]

Answer:

i believe

the first one it's (0,3)

the second is (4, -7)

3 0

2 years ago

Find the value of x<br>m<2= x + 132

podryga [215]

Answer:

x= -12

Step-by-step explanation:

Please see attached picture for full solution.

3 0

2 years ago

Read 2 more answers

Show the work on 6 divided by 5,406

fenix001 [56]

I think it's the 0.0011098779

5 0

3 years ago