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Zinaida [17]
3 years ago
11

What is the equation of a circle centered at the origin with radius 15?

Mathematics
1 answer:
sashaice [31]3 years ago
6 0

Answer:

D

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( where r is the radius )

Here r = 15, thus

x² + y² = 15² , that is

x² + y² = 225 → D

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#4.

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#5

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\\ \sf\longmapsto 5x=3x+10

\\ \sf\longmapsto 5x-3x=10

\\ \sf\longmapsto 2x=10

\\ \sf\longmapsto x=\dfrac{10}{2}

\\ \sf\longmapsto x=5

Now

m<ABC

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\\ \sf\longmapsto 40+10

\\ \sf\longmapsto 50

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