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cestrela7 [59]
4 years ago
5

A circle is centered at N(-6, -2). The point E(-1,1) is on the circle.

Mathematics
2 answers:
galina1969 [7]4 years ago
6 0

Answer:

Outside the circle

Step-by-step explanation:

Let's first write the equation of this circle: (x-h)^2+(y-k)^2=r^2, where (h, k) is the center and r is the radius. Here, the center is (-6, -2). We need to find the radius, which will just be the distance from N to E:

NE = \sqrt{(-6-(-1))^2+(-2-1)^2} =\sqrt{25+9} =\sqrt{34}

The radius is √34, which means that r² = 34. So, our equation is:

(x + 6)² + (y + 2)² = 34

Plug in -10 for x and -7 for y:

(x + 6)² + (y + 2)² = 34

x² + 12x + 36 + y² + 4y + 4 = 34

x² + 12x + y² + 4y + 40 = 34

x² + 12x + y² + 4y + 6 = 0

(-10)² + 12 * (-10) + (-7)² + 4 * (-7) + 6 = 7

Since 7 > 0, we know that H lies outside the circle.

Airida [17]4 years ago
4 0

Answer:

Outside the circle

Step-by-step explanation:

Radius: NE

sqrt[(-10--6)² + (-7--2)²]

sqrt(34)

Distance NH

sqrt[(-1--6)² + (1--2)²]

sqrt(41)

Distance NH > radius,

So outside the circle

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Least common multiple of 3,18,and 9
wariber [46]

Answer:

18

Step-by-step explanation:

Lets factor each of them:

3:1,3

18:2*3^2

9:3^2

every factor is in 18:2,3,3...

Therefore the answer is 18.

8 0
3 years ago
A random variable X is exponentially distributed with an expected value of 68.
VLD [36.1K]
It is b because you round to the nearest 100 and I got it right on the quiz
6 0
3 years ago
Which equation represents a direct variation?<br> y = 2х<br> y=x+4<br> y= 1/2x<br> y=3/x
gayaneshka [121]

Answer:option 1 and option 2 represents a direct variation.

Step-by-step explanation:

A direct variation is one in which, as one variable increases in value, the other variable increases in value. Also as one variable decreases in value, the other variable decreases in value.

Looking at the options,

1) y = 2х

When x = 2, y = 2×2 = 4

When x = 3, y = 2×3 = 6

Therefore, y = 2x is a direct variation.

2) y=x+4

When x = 2, y = 2 + 4 = 6

When x = 3, y = 3 + 4 = 7

Therefore, y = x + 4 is a direct variation.

3) y= 1/2x

When x = 2, y = 1/2×2 = 1/4 = 0.25

When x = 3, y = 1/2×3 = 1/6 = 0.17

Therefore, y = 1/2x is not a direct variation.

4) y = 3/x

When x = 2, y = 3/2 = 1.5

When x = 3, y = 3/3 = 1

Therefore, y = 3/x is not a direct variation.

6 0
4 years ago
Simplified 1100/2500
velikii [3]

Answer:

11/25

Step-by-step explanation:

we can divide both top/bottom by 100, to get 11/25

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4 0
3 years ago
Using Figure 4, complete these functions.
otez555 [7]

Answer:

  • D. 21/29

Step-by-step explanation:

<u>Formulas used:</u>

  • sin θ = sin (180 - θ)
  • sin θ = opposite/hypotenuse

<u>Opposite:</u>

  • y- coordinate of given point = 21

<u>Hypotenuse:</u>

  • √x²+y² = √20²+21²= √841 = 29

<u>Then</u>

  • sin θ = 21/29

Correct choice is D

7 0
3 years ago
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