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4 years ago

If you answer ever single question I will mark you as brainliest :) plz hurry

Mathematics

1 answer:

RoseWind [281]4 years ago

4 0

Answer:

Step-by-step explanation:

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A cell tower is located at and transmits a circular signal that covers three major cities. The three cities are located on the c

Lelu [443]

Answer:

$(x+8)^2 +(y-4)^2 = 25$

Step-by-step explanation:

Assuming this complete problem: "A cell tower is located at (-8, 4) and transmits a circular signal that covers three major cities. The three cities are located on the circle and have the following coordinates: G (-4, 7), H (-13, 4), and I (-8, -1). Find the equation of the circle"

For this case the generla equation for the circle is given by:

$(x-h)^2 +(y-k)^2 = r^2$

From the info we know that the tower is located at (-8, 4) so then h = -8 and k = 4, so then we need to find the radius. So we have the equation like this: $(x+8)^2 +(y-4)^2 = r^2$

If the 3 points are on the circle then satisfy the equation. We can use the first point (-4,7) and if we replace we can find the value for $r^2$

$(-4+8)^2 +(7-4)^2 =25= r^2$

So then $r = \sqrt{25}=5$

And if we replace the second point we got this:

$(-13+8)^2 +(4-4)^2 = 25 =r^2$

And for the third point we have:

$(-8+8)^2 +(-1-4)^2 = 25 =r^2$

And we got the same result.

So then our final equation is given:

$(x+8)^2 +(y-4)^2 = 25$

4 0

4 years ago

Answer???? Angle 1, and angle 2. I need help

REY [17]

M> 1 + m>2 = 90°
x-12 + 5x = 90°
6x - 12 = 90°
6x -12 +12 = 90°+12
6x = 102
6x/6 = 102/6
x = 17

m>1 = x-12
m>1 = 17-12
m>1 = 5

m>2 = 5x
m>2 = 5(17)
m>2 = 85

7 0

3 years ago

AB = 2x-5 BC = 6x AC = 27

OlgaM077 [116]

Answer:

correct answer is x = 2.75

Step-by-step explanation:

Given;

AB = 2x-5

BC = 6x

AC = 27

Hence,

=> AC = AB + BC

=> 27 = 2x-5 + 6x

=> 27 = 8x-5

=> 27-5 = 8x

=> 22 = 8x

=> 22/8 = x

=> 11/4 = x

2.75 = x

3 0

3 years ago

There are 16 cookies and 4 friends. How many cookies will each friend will have?

Anestetic [448]

Each friend will have 4 cookies.

8 0

3 years ago

(x+15)<br> (3x-35)<br> If the angles are congruent, what is x?

Arada [10]

Answer: x = 25

Step-by-step explanation:

If these angles are congruent, that means they are equal. Using that information, we can frame the following equation:

(x+15) = (3x-35)

To find 'x', we just need to solve the above equation.

(x+15) = (3x-35)

x+15 = 3x-35

x-3x = -35-15

-2x = -50

x = 25.

Therefore, 'x' is 25 degrees.

7 0

3 years ago