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weqwewe [10]
3 years ago
10

What is the equation of a circle centered at the origin with radius 20.. i cant find the answer and i even tried?

Mathematics
2 answers:
pogonyaev3 years ago
7 0

Answer:

Required equation of circle is x² + y² = 400

Step-by-step explanation:

We are given center of the circle i origin and radius = 20 units.

We have to find the equation of the circle.

We know that coordinates of the origin is ( 0 , 0 )

To write the equation of circle we use standard equation of circle,

Standard equation of circle is given as below,

( x - h )² + ( y - k )² = r²

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

Using given information and standard equation of circle, we have

( x - 0 )² + ( y - 0 )² = 20²

x² + y² = 400

Therefore, Required equation of circle is x² + y² = 400

KIM [24]3 years ago
4 0
General equation of a circle with centre (h, k) is given by:

(x - h)^{2} + (y - k)^{2} = r^{2}

Now, the origin is the centre and radius is 20, so substituting these points in yields:
x^{2} + y^{2} = 20^{2}
x^{2} + y^{2} = 400
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Which functions represent the arithmetic sequence 8, 1.5, –5, –11.5 . . . ? Check all that apply.
torisob [31]

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A,D

Step-by-step explanation:

8 0
3 years ago
Find the value of x​
Ivahew [28]

Answer:

x=27

Step-by-step explanation:

The sum of the angles of a triangle is 180 degrees

90 + x+23 + x+13 = 180

Combine like terms

126 +2x = 180

Subtract 126 from each side

126-126 +2x=180-126

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Divide by 2

2x/2 = 54/2

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4 0
3 years ago
In 2002, the Centers for Disease Control and Prevention (CDC) reported that 8% of women married for the first time by their 18th
ehidna [41]

Question:

In 2002, the Centers for Disease Control and Prevention (CDC) reported that 8% of women married for the first time by their 18th birthday, 25% married by their 20th birthday, and 76% married by their 30th birthday. Based on these data, what is the probability that in a family with two daughters, the first and second daughter will be married by the following ages? (Enter your answers to four decimal places.) (a) 18 years of age (b) 20 years of age (c) 30 years of age

Answer:

A.) 0.0064

B.) 0.0625

C.) 0.5776

Step-by-step explanation:

Given the following :

Married by 18th birthday = 8% = 0.08

Married by 20th birthday = 25% = 0.25

Married by 30th birthday = 76% = 0.76

In a family with two(2) daughters :

P(First daughter will be married by 18) = 0.08

P(second daughter will be married by 18) = 0.08

P(1st and 2nd married by 18) = (0.08×0.08) = 0.0064

B.)

P(First daughter will be married by 20) = 0.25

P(second daughter will be married by 20) = 0.25

P(1st and 2nd married by 20) = (0.25×0.25) = 0.0625

C.)

P(First daughter will be married by 30) = 0.76

P(second daughter will be married by 30) = 0.76

P(1st and 2nd married by 30) = (0.76×0.76) = 0.5776

6 0
3 years ago
Please help me solve this: 6 1/3 + k + 3 5/6 + 5 1/2 = 26 1/6
attashe74 [19]
6 1/3 + k + 3 5/6 + 5 1/2 = 26 1/6 
Add your fractions 
6 1/3 + 3 5/6 + 5 1/2 = 15 2/3
now You need to isolate k on one side of the equation by using the subtraction method of equality.
k + 15 2/3 = 26 1/6
k = 10 1/2 

Hope this helps

I had to edit
5 0
3 years ago
Read 2 more answers
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