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mash [69]
3 years ago
11

The center of a sphere is HURRY ON A TIMER

Mathematics
1 answer:
omeli [17]3 years ago
6 0

Answer:

Center of the Sphere is a fixed point in its interior which is equidistant from each point on sphere. Option 1 is not right because it says center is line segment. Option 3 is right as it says it is fixed and equidistant from point of surface.

Step-by-step explanation:

1 The center of a sphere is

2 a line segment from the center point to the surface of the sphere.

3  a fixed point equidistant from all points on the surface of the sphere.

4  a three-dimensional circle in which all points are equidistant from a fixed point.

5  the same as the base of the sphere

nvm too late :D

the answer is number 3

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Thirty children from an after-school club went to the matinee. This is 20% of the children in the club. How many children are in
Setler [38]

Answer:

<h2>C)150 </h2>

Step-by-step explanation:

20%=30

x by 5 to get 100%

100%=150

8 0
2 years ago
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Enter an inequality that represents the description, and then solve. Dave has $14 to spend on a $7 book and two birthday cards (
iogann1982 [59]

Answer:

3.5

Step-by-step explanation:

14 - 7 = 7

7/2

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so thats the most hope I helped

4 0
2 years ago
Why is the answer A? Plzzz explain.
Contact [7]

Answer:


Step-by-step explanation:

f(x) = x^2 + 4x + 4

f(x + a) = (x + a)^2 + 4(x + a) + 4

f(x + a) = x^2 + 2ax + a^2 + 4x + 4a + 4   Now combine like terms and use the distributive property.

f(x + a) = x^2 + (2a + 4)x + a^2 + 4a + 4

We are told that f(x + a) = x^2 - 6x + 9

So that means that

2a + 4 = - 6      Subtract 4 from both sides.

2a = - 6 - 4

2a = - 10          Divide by 2

a = - 10/2

a = - 5.            

But you are not finished. You have to check the last part.

a^2 + 4x + 4 = 9

(a + 2)^2 = 9

Take the square root of both sides

sqrt(a+ 2)^2 = +/- 3

a+2 = 3

a = 1.

Does this work or is it extraneous? It is extraneous because it will not work for  2(a) + 4 = - 6  

You get 6 = - 6 which is not correct. But you did give the second best answer.

a + 2 = - 3

a = - 3 - 2

a = - 5 which agrees with your previous answer.

===========

This is an extremely hard or tricky or sneaky problem. It takes a lot of conniving to get the right answer and 1 is not a left field answer. It just does not happen to be correct.

8 0
3 years ago
Help me please.....,,,,,,,,,,,,
attashe74 [19]

Answer:

It has to be a positive number.

Step-by-step explanation:


7 0
3 years ago
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What is 1/9 x 4/5? please help
Anni [7]

Answer:

4/45

Step-by-step explanation:

Multiply the top by the top, and the bottom by the bottom:

\frac{1}{9} * \frac{4}{5} = \frac{4}{45}

4/45 cannot be reduced down anymore, therefore that is your answer.

<em>Hope this helps!!</em>

<em>- Kay :)</em>

8 0
2 years ago
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