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2 years ago

This circle is centered at the origin, and the length of its radius is 5. What is the equation of the circle?

Mathematics

1 answer:

Artist 52 [7]2 years ago

4 0

Given :-

Circle's centre is at origin.
The radius is 5 u .

To Find :-

The equation of the circle .

Answer :-

As we know that the general equation of circle centred at origin is ,

x² + y² = r²

where r is the radius .Here r =5 , So ,

x² + y² = 5²
x² + y² = 25

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Help! ASAP!!!

solniwko [45]

Answer:

7.2 units

Step-by-step explanation:

Coordinates of city A = (0, 0)

Coordinates of city B = (6, 4)

Use the distance formula to find the distance between the two cities as follows:

$AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Let,

$A(0, 0) = (x_1, y_1)$

$B(6, 4) = (x_2, y_2)$

Plug in the values into the formula

$AB = \sqrt{(6 - 0)^2 + (4 - 0)^2}$

$AB = \sqrt{(6)^2 + (4)^2}$

$AB = \sqrt{36 + 16} = \sqrt{52}$

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3 years ago

mix 2parts red with 3parts cream and 1part blue how much cream and blue paint do i need to mix with 4litres of red

vagabundo [1.1K]

The 4 litres of red has to be 2 parts of the mixture, so each part will be 2 litres. Therefore 3 parts of cream will be 6 litres and the one part of blue will be 2 litres.

7 0

3 years ago

Read 2 more answers

10 is 8% of a, and 5 is 4% of b. c equals b/a. What is the value of c?? step by step explanation pls...

klio [65]

Answer:

c = 1

Step-by-step explanation:

"10 is 8% of a": 0.08a = 10, or a = (10/0.08)

"5 is 4% of b": 0.04b = 5, or b = (5/0.04)

"c equals b/a": c = (b/a)

----

What is the value of c?

c = (b/a)

c = ((5/0.04)/(10/0.08))

c = (5/0.04)*(0.08/10)

c = (5/10)*(0.08/0.04)

c = (1/2)*(2)

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2 years ago

(a) Express the prime number 3 as the difference of two squares? 3=

Fed [463]

Answer:

2^2 - 1^2

Step-by-step explanation:

1^1 = 1

2^2 = 4

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2^2 - 1^1 = 3

8 0

2 years ago

A circular merry-go-round has a radius of 5 feet. Find the distance of a spin of one full rotation. Use 3.14 for pi and round th

Sedbober [7]

Option C

The distance of a spin of one full rotation is 31.4 feet

Solution:

Given that,

A circular merry-go-round has a radius of 5 feet

Radius = 5 feet

We have to find the distance of spin for one full rotation

Distance covered in 1 full of rotation is equal to circumference of circle

The circumference of circle is given as:

$C = 2 \pi r$

Where "r" is the radius

$C = 2 \times 3.14 \times 5\\\\C = 6.28 \times 5\\\\C = 31.4$

Thus the distance of a spin of one full rotation is 31.4 feet

6 0

3 years ago