So you need to start with the standard form of a circle.
(x - h)^2 + (y - k)^2 = r^2 , where the center is at (h, k) with a radius of r
All points on the circle have a distance equal to the radius from the center of the circle. So you must use the center (1, 4) and the given point on the circle
(-2, 4) in order to find the radius. You can do this by using the distance formula r^2 = (x1 - x2)^2 + (y1 - y2)^2
r^2 = (1 - -2)^2 + (4 - 4)^2
r^2 = (3)^2 + (0)^2
r^2 = 9
The equation of a circle calls for r^2 so we do not need to find just r. Now we just substitute (h,k) and r^2 into the equation to get the standard form of the circle.
(x - 1)^2 + (y - 4)^2 = 9
Answer:
17y+28
Step-by-step explanation:
First, distribute the 4 to 3y+7. This would get you 12y+28. Then add the 5y to the 12y+28. This would bring you to your answer of 17y+28
Answer:
There are 6 dimes and 9 quarters.
Step-by-step explanation:
Represent the number of dimes and the number of quarters by d and q.
Then d + q = 15, or q = 15 - d.
Also, ($0.25)q + ($0.10)d = $2.85, or 5q + 2d = 57.
Substituding 15 - d for q, we get 5(15 - d) + 2d = 57, or
75 - 5d + 2d = 57, or
75 - 3d = 57, or
3d = 18. Thus, there are 6 dimes. Since q = 15 - d, q = 15 - 6 = 9.
There are 6 dimes and 9 quarters.
Answer:
The sum of two angles of a triangle is 116 degree and their differences is 24 degree. Find the measure of each angle of the triangle. Let the angle ne x and y . Simply sum of am angle of an ∆ is 180°.
Answer: a
Step-by-step explanation: give brainliest