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seropon [69]
3 years ago
8

What is the radius of a circle with an area of 530.9

Mathematics
2 answers:
svetoff [14.1K]3 years ago
8 0

Answer:

12.9

Step-by-step explanation:

..................

Igoryamba3 years ago
3 0

Answer:

13

Step-by-step explanation:

diameter = r * 2 = 13  * 2 = 26 (diameter is double radius)

Circle area = π * r^2 = π * 169 ≈ 530.9

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3 years ago
What is the solution set of the equation 6x^2 - 18x - 18 =6?
dybincka [34]

Answer:

The solution set is {4, -1}

Step-by-step explanation:

6x²- 18x -18 = 6

6x²- 18x -18 - 6 = 0

6x²- 18x -24 = 0

6(x² - 3x - 4) = 0

6(x - 4)(x + 1) = 0

6 = 0 not true

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x = 4           x = - 1

The solution set is {4, -1}

3 0
3 years ago
4. The value of y varies directly with x. When y = 275, x = -22 What is y when x = 17.5?​
Helga [31]

y = x

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y = 17.5

y = (17.5*275)/-22

y = -179.0

5 0
3 years ago
I need help please ​
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8 0
3 years ago
The equation of a circle whose center is at (1,2) and radius is 5 is (x + 1)² + (y + 2)² = 5 (x - 1)² + (y - 2)² = 25 (x - 1)² -
Oksana_A [137]
\bf \textit{equation of a circle}\\\\ &#10;(x- h)^2+(y- k)^2= r^2&#10;\qquad &#10;center~~(\stackrel{1}{ h},\stackrel{2}{ k})\qquad \qquad &#10;radius=\stackrel{5}{ r}&#10;\\\\\\\&#10;(x-1)^2+(y-2)^2=5^2\implies (x-1)^2+(y-2)^2=25
7 0
3 years ago
Read 2 more answers
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