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Nookie1986 [14]
3 years ago
11

Please help. What is the circumference of the circle? (X+4)^2+(y-5)^2=81

Mathematics
2 answers:
PIT_PIT [208]3 years ago
8 0

the radius: r^2 = 81

r =9

c = 2*pi*r

 = 2 * pi * 9

 = 18 *pi

Answer: 18*pi or approximately 56.62

masha68 [24]3 years ago
5 0

center (-4,5)

radius: 9

hope that helps. let me know

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  [[274][895][136]]

Step-by-step explanation:

Starting with the middle row, we need a product of two single-digit numbers that is between 53-1 = 52 and 53-9 = 44. Possible products are 5×9=45 and 6×8=48. This means the number in the middle position in the left column must be 8 or 5.

The middle number in the left column cannot be 5, because we must be able to get -5 by subtracting that number from a sum that is at least 3 = 1+2. So, the middle number in the left column is 8, the other two numbers in that column are 1 and 2, and the other two numbers in the middle row are 5 and 9.

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The only remaining digits are 3 and 6. In order to have -3 on the bottom row, the equation there must be 1×3-6 = -3. Then the middle digit must be divisible by 3, so must be 9.

Our solution is ...

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Write -8 in simplest radical form.
Nadya [2.5K]
2.8 or if rounded to the nearest tenth so 2.8√8
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I hope this helps you



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