Answer:
The equation of the circle is (x -8)² + (y -4)² = 184.96
Step-by-step explanation:
In order to determine the equation of this circle we first need to calculate the coordinates of the center, which are given by the difference of the coordinates divided by two. We have:
Xc = [13 - (-3)]/2 = (13 + 3)/2 = 16/2 = 8
Yc = (11 - 3)/2 = 8/2 = 4
Therefore the center is (8,4). We now need to find the radius of the circle, which is given by the distance from the center to one of the points given:
r = sqrt{[8 - (-3)]² + (11 - 3)²} = sqrt(11² + 8²) = 13.60
The equation of a circle is given by:
(x - Xc)² + (y - Yc)² = r²
(x -8)² + (y -4)² = (13.6)²
(x -8)² + (y -4)² = 184.96
Answer:
Step-by-step explanation:
Let us assume the unknown number is n.
Given statement " The number that is twice as much as five more than a number a."
Twice of a is = 2 times of a= 2a.
Now, it is said twice of that number of 5 more than a.
So, we can set an equation as
<h3>2a = a +5.</h3>
Subtracting a from both sides, we get
2a - a = a-a +5
a = 5.
<h3>Therefore, unknown number a is 5.</h3>
Answer:
doesn't make sense
Step-by-step explanation: