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Cloud [144]
3 years ago
7

The equation of a circle is ​ (x−11)2+(y+15)2=144 ​ . What is the circle's radius?

Mathematics
2 answers:
Helen [10]3 years ago
4 0
I am assuming you meant to write the equation as (x-11)^2 + (y+15)^2= 144 in which case the answer is 12. The general formula of a circle is (x-h)^2 + (y-k)^2 = r^2 so the value on the right hand side of the equation is the square of the radius. You simply have to take the square root of it
yuradex [85]3 years ago
3 0
The equation of a circle is (x-h)^2+(y-k)^2=r^2, where (h,k) is the center and r is the radius.
To find the radius, we would find the square root of 144, which is 12.
r=12

:)
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2 years ago
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We assume you want to simplify this.

Use the distributive property to eliminate the parentheses. That property tells you that the factor outside parentheses (2) will multiply both of the terms inside parentheses. It's as though you had a bag (parentheses) with two objects inside. Two such bags will have two of each of those objects.

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Now, the like terms -2x and +x can be combined.

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5 0
3 years ago
1.The price of a coat was priced at $300. It went on sale after Christmas. It had a 22% discount. What was the sale price?
LekaFEV [45]

Answer:

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6 0
3 years ago
Read 2 more answers
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