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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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Find the slope of the line through each pair of points.
Natali [406]

Answer:

1. 0, 2. -1/2, 3.undefined, 4. -5/3, 5. 6, 6. -2, 7. 23/17

Step-by-step explanation:

y2 - y1 / x2 - x1

1. -18 - -18 / 15 - 6 = 0

2. 16 - 12 / 0 - 8 = -4/8 = -1/2

3. 37 - 2 / -15 - -15 is undefined (can't have 0 as denominator)

4. 30 - 20 / -5 - 1 = 10 / -6 = -5/3

5. -36 - -12 / 4 - 8 = -24 / -4 = 6

6. - 23 - -15 / 11 - 7 = -8 / 4 = -2

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3 0
2 years ago
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Malia did push-ups and pull-ups in her physical education class. She did 24 push-ups and pull-ups combined, with each push-up ta
Paul [167]

Answer:

12 pull

As 48 seconds + 20 seconds push = 68 seconds

Step-by-step explanation:

Because she did 10 push = 20 seconds = 2 seconds each

12 pull = 48 seconds  = 4 seconds each

= 68 seconds combined.

Workings;

18 seconds found for the first set

We then find a divider of 68 and know that

6 x 3 = 18 seconds push

12 x 3 =36 seconds pull  T= 54

14 left over = 1 x 12 seconds pull

+ 2 seconds push

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Answer:

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Step-by-step explanation:

6 0
3 years ago
Evaluate the expression 3(7 + 4)2 − 14 ÷ 7. (5 points)
Kitty [74]
<span>3(7 + 4)2 − 14 ÷ 7

First do the parenthesis

7 + 4 = 11

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Then multiply 3, 11, and 2 together

3 x 11 x 2 = 66

66 - 14/7

14/7 equals to 2

66 - 2 

Then just simplify

66 - 2 = 64

64 is your answer

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3 0
3 years ago
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musickatia [10]

Answer:

1/4

Step-by-step explanation:

5/20 = 1/4

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4 0
3 years ago
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