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dimaraw [331]
3 years ago
5

The center of a circle is at (2, -5) and it's radius is 12. What is the equation of the circle?

Mathematics
2 answers:
Svetach [21]3 years ago
8 0
The equation for a circle is (x-h)^2 +(y-k)^2=r^2
You just have to plug in your coordinates h is the x and k is the y.
The r is radius squared.
so, (x-2)^2+(y-(-5)^2=144
You have to be careful of those tricky negative values. When you distribute the y-(-5) it turns into y+5. 
So your answer is D.
Solnce55 [7]3 years ago
5 0

Answer:

The answer is D

Step-by-step explanation:

It is D

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Point X outside a circle is 34 cm from the center of the circle.
scoundrel [369]

Answer:

Right option is c 16 cm

Step-by-step explanation:

From the question,

The radius of the circle, the point drawn from the center of the circle to piont X and the length of the tangent drawn from point X to the point of tangency all form a right angle triangle.

Using pythagoras theorem,

a² = b²+c²...................... Equation 1

Where b = the length of the tagent, a = length of the point drawn outside the circle from the center, b = radius of the circle.

Given: a =  34 cm, b = 30 cm.

Substitute into equation 1

34² = 30²+c²

c² = 34²-30²

c² = 1156-900

c² = √256

c² = 16 cm.

Hence the right option is c 16 cm

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2 years ago
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scoray [572]
It
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6 0
3 years ago
The awnser I’m really have trouble finding a awnser
svlad2 [7]
A = \pi r^2
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Mark bought 2 pounds of walnuts for 25.50 Approximately how much will he pay for 7 pounds of walnuts​
lara31 [8.8K]

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89.25

Step-by-step explanation:

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What is the value of 34 square
Oksi-84 [34.3K]

Question

What is the value of 34²

Answer:

1156

Step-by-step explanation:

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