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weeeeeb [17]
3 years ago
10

AB is tangent to circle D. Find the value of x.

Mathematics
1 answer:
Svet_ta [14]3 years ago
6 0

Answer:

c     15

Step-by-step explanation:

Tangent AB is tangent to circle D at point A. The angle made by a tangent to a circle and a radius of the circle at the point of tangency is a right angle. That means that angle is a right angle, and triangle ABD is a right triangle.

We can use the Pythagoren theorem.

a^2 + b^2 = c^2

x^2 + 20^2 = (x + 10)^2

x^2 + 400 = (x + 10)(x + 10)

x^2 + 400 = x^2 + 10x + 10x + 100

400 = 20x + 100

20x = 300

x = 15

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Henry knows that the circumference of a circle is 18mc006-1.jpg inches. What is the area of the circle?
lesantik [10]
The complete question is:
Henry knows that the circumference of a circle is 18π inches. What is the area of the circle?

Solution:
Circumference (C) of the circle can be written as:

C=2 \pi r \\ \\ 18 \pi =2 \pi r \\ \\ r=9

Using this value of radius, we can find the Area(A) of the circle.

A= \pi  r^{2}  \\  \\ 
A= \pi (9)^{2}  \\  \\ 
A=81 \pi

Therefore, area of the circle having a circumference of 18π inches will be 81π inches²
5 0
3 years ago
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Answer:

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Step-by-step explanation: cant explain it

8 0
3 years ago
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lara [203]

By identifying the radius and the center, we concluded that the equation is something like:

(x - 2)^2 + (y - 1.5)^2 = 1.8^2

<h3></h3><h3>How to write the equation of the circle?</h3>

For a circle centered on the point (a, b) with a radius R, the equation is:

(x - a)^2 + (y - b)^2 = R^2

So first we need to identify the center, we can see that it is: (2, 1.5)

And the radius is the distance between the center and the edge.

R  = 1.8 (measured with a ruler, respecting the notation of the graph).

Then the equation of the circle is something like:

(x - 2)^2 + (y - 1.5)^2 = 1.8^2

If you want to learn more about circles:

brainly.com/question/1559324

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7 0
2 years ago
Find the GCF of 7 and 19​
Naddik [55]

Answer:

The GCF of 7 and 19 is 1.

Step-by-step explanation:

No other number evenly divides into either of these numbers. So the answer is 1.

Glad I could help! Feel free to mark brainliest!

5 0
3 years ago
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mr Goodwill [35]

Answer:

240

Step-by-step explanation:

Misel: 600kg*3/5=360

Patrick: 600-360=240

8 0
2 years ago
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