Find the equation of a circle with a center at (7, 2) and a point on the circle at (-2, -5).

Mathematics

1 answer:

KatRina [158]3 years ago

4 0

Answer:

(x-7)^2 + (y-2) ^2 = 130

Step-by-step explanation:

We need to find the length of the radius

the length of the radius is found by using the distance formula

r = sqrt( ( -2-7)^2+( -5 -2)^2)

sqrt( ( -9)^2+( -7)^2)

sqrt( 81+49)

sqrt(130)

The formula for a circle is

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

where (h,k) is the center and r is the radius

(x-7)^2 + (y-2) ^2 = 130

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Can someone please help me with this, it’s urgent!!

fomenos

Answer:

Step-by-step explanation:

angle 4 is congruent to angle 4 because they are alternate interior angles.

angle 5 is congruent to angle 3 because they are alternate interior angles.

angle 1+angle 2+angle 3 is equal to (=) angle 1+angle 2+angle 3

angle 1+angle 2+angle 3=180 degree(being sum of interior angles of a trianngle)

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3 years ago

(28÷4)+3+6x5 tell accordingly the correct answer will be marked as brainliest answer

Anvisha [2.4K]

The answer to this expression is 40. Why? Well, we can use PEMDAS in this expression.

P: Parenthesis

So this is our first step:

28 / 4 = 7

Next step: Simplify.

7 + 3 + 6 x 5

Then: E stands for Exponents but we have none so we can move on.

M stands for Multiply so we have our next step:

6 x 5 = 30

Now: Simplify.

7 + 3 + 30

Now that we have a simple equation, we can add the values to get our answer.

7 + 3 = 10
10 + 30 = 40

Therefore, your answer is 40. Whenever you see problems like this, be sure to use PEMDAS for a faster and more accurate evaluation.

Your final answer: 40.

3 0

2 years ago

How to find the measure of an arc?

Flauer [41]

Check the picture below.

so, if we add all the arcs provided, we have a total of 153° + 60° + 53°, which gives us 270°.

keeping in mind that a circle has a total of 360°, the shaded region has to be a sum of 360° - 270°, or 90°.

now, notice the tickmarks on those angles in the graph above, meaning those two angles are twins, and 90°/2 is 45°, so each of those twins is 45°.

arcYW = 60° + 45°.