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Step2247 [10]
3 years ago
9

PLZ HELP ASAP FEATURES OF A CIRCLE FROM ITS EXPANDED EQUATION LAST ONE

Mathematics
1 answer:
pantera1 [17]3 years ago
5 0
We have the following equation:
 x2 + y2 + 6y - 72 = 0
 Rewriting we have:
 x2 + y2 + 6y = 72
 Complete squares we have:
 x2 + y2 + 6y + (6/2) ^ 2 = 72 + (6/2) ^ 2
 x2 + y2 + 6y + (3) ^ 2 = 72 + (3) ^ 2
 x2 + y2 + 6y + 9 = 72 + 9
 x2 + (y + 3) 2 = 81
 So, the center is:
 (0, -3)
 The radio is:
 r = 9
 Answer:
 
(0, -3)
 
r = 9
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Median of 67, 76, 76, 84, 87, 93
olga2289 [7]

\huge\boxed{80}

The median is the middle number when the numbers are in ascending or descending order.

In this case, the numbers are already in ascending order.

There is an even number of numbers, so we need to find the two middle numbers.

76, 84

Now, find the average of these numbers by adding them together and dividing them by 2, which is the number of values.

\frac{76+84}{2}=\frac{160}{2}=\boxed{80}

7 0
3 years ago
Read 2 more answers
Can someone explain how to do this please?
OLga [1]
You take 1.2 and multiply it by 1.29, which gives you the answer, which is $1.55
4 0
3 years ago
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9-5 1/2 x - 3 (-2x+1)
Stells [14]
First, distribute the -3(-2x + 1). 
-3 x -2x = 6x      -3 x 1 = -3       -3(-2x + 1) = 6x - 3
Now we have: 
9 - 5 1/2x + 6x - 3 
Combine like terms. 
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The two terms we are left with are 1/2x and 6. 
The simplified version of this expression is 1/2x + 6. 
Hope this helps!
7 0
3 years ago
...................................................
butalik [34]
The median is 4.

Hope this helps
7 0
3 years ago
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What's the answer to this?
zvonat [6]

Answer:

1.5

Step-by-step explanation:

-1.5 + 1.5 will get you to 0

-1.5 + (-1.5) will get you -3. The other options are out of the question

7 0
3 years ago
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