Answer:
(x + 4)^2 + (y - 8)^2 = 81
or
(x + 4)^2 + (y - 8)^2 = 9^2 depending on how your teacher wants it written.
Step-by-step explanation:
The standard form for a circle is
(x + h)^2 + (y + k)^2 = r^2
r is the radius.
You are given the diameter
r = d/2
r = 18/2
r = 9
So you already have the right hand side of the equation
(x + h)^2 + (y + k)^2 = 9*2
(x + h)^2 + (y + k)^2 = 81
You basically have h and k as well. They come from the center point.
h = 4
k = - 8
So the equation of the circle (and the answer) is
(x + 4)^2 + (y - 8)^2 = 81
One question remains. Why do the x and y values change signs? If you know what the distance formula is, then what you are finding is the distance r of all points on the circle from the center of the circle.
It is the distance formula that is actually the formula for the circle.
Answer:
9.075
Step-by-step explanation:
The unit rate is 9 an hour
Answer:
Step-by-step explanation:
radius=√((15-14)²+(17-17)²)=1
eq. of circle is (x-14)²+(y-17)²=1²
Answer:
The graph of 3rd picture is correct Option.
Step-by-step explanation:
Let x =green and y = carrots
We make equations of the given sentences and then plot them to find the correct answer.
The equation for A salad made such that the difference between twice the ounces of greens and the ounces of carrots is at least 3 is
2x-y ≥ 3
The equation for the sum of the ounces of greens and twice the ounces of carrots is less than 4.
x+2y < 4
We plot both the equations and gain the graph.
The graph is attached in the figure.
The graph of 3rd picture is correct Option.
