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fredd [130]
3 years ago
15

Recall what you know about similarity. If circle B is similar to circle A, what must exist?

Mathematics
2 answers:
Dima020 [189]3 years ago
6 0

Answer:

Circle A and circle B must exist.

That is it—no other requirement.

That is because all circles are similar; therefore, pick any two circles, and they are similar. Somewhat loosely speaking, two geometric entities are similar if and only if they are the same shape. All circles are the same shape—perfectly round.

There is not any requirement on size. In general, two arbitrarily picked circles will be of different sizes—there is nothing requiring them to be different sizes, but in general they will be. If you really want the two circles the same size, you really should specify congruent circles.

There is not any requirement on location. Location has nothing to do with shape. If you really want the two circles to have the same center, you really should specify concentric circles. If you really want the two circles to just barely touch each other and some third geometric entity at the same point, you really should specify tangent circles—internally tangent if you want the two circles on the same side of the line, plane, …, and externally tangent if you want the two circles on opposite sides. If you are dealing with 3-dimensional space and really want the circles to be the the same plane, you really should specify coplanar circles.

Without any additional specification, all circles are similar. The same is true for equilateral triangles, for squares, for rectangles with a 2:1 aspect ratio, all regular heptagons, …, as well as 3-dimensional entities such as for spheres, for cubes, for regular icosahedrons, ….

Step-by-step explanation:

Hope it helps you

kenny6666 [7]3 years ago
4 0
It's not exactly clear what your teacher or book is asking for. By the way, all circles are similar to one another. There's no need to make the statement "If circle B is similar to circle A" because it's something that can be proven for any pair of circles. There are no cases where we can find two circles that are not similar. 
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Two trains leave towns 474 kilometers apart at the same time and travel toward each other. One train travels13 km/m faster than
guajiro [1.7K]

Answer:

112 km/h

125 km/hr

Step-by-step explanation:

Distance = time * speed

Distance  = distance train 1 + distance train 2

474 = 2(s) + 2(s + 13)

Distribute

474 = 2s + 2s + 26

Combine like terms

474 = 4s + 26

Subtract 26 from both sides

448 = 4s

Divide both sides by 4

112 = s

s = 112 km/h

s + 13 = 125 km/hr

3 0
2 years ago
The mass of the sun is 21.3525×102921.3525×1029 kg. the mass of mercy is 328.5×1021328.5×1021 kg.how many times larger is the ma
Liono4ka [1.6K]
This is basically a simple problem to understand. The only thing that needs to be done is to divide the mass of the sun by the mass of mercury. It will give the required result.

Number of times the mass of sun is greater than
the mass of mercury =  21.3525×102921.3525×1029/<span>328.5×1021328.5×1021
                                  = </span><span>7.1783629e+15
I hope that this is the answer that you were looking for and it has come to your great help.</span>
8 0
3 years ago
The average age of a football player in a league is 27.
KonstantinChe [14]

Answer:

x¯ = 28 years

μ = 27 years

Step-by-step explanation:

Add all the ages and divide the 12 players.

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So are teacher ‍ gave us the answer but she wants us to to the work and I have tried so hard and I can’t find it
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In order to find the shaded region the first thing you have to do is find the area of the two small triangles, then find the area of the big triangle. Subtract the area of the small triangles from the big one and that is the area.

Step one: 11×12=132

Step two: 132÷2= 66

Step three: 66+66=132 (because there is two small triangles with same dimensions)

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8 0
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Ms. Delgado wants to purchase a new home valued at $141,000.
DedPeter [7]
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2 years ago
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