Because the left-hand side is always >0, the equation has No Solution.
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.
Hmm alright lets see what can be done
Step-by-step explanation:
2,190 times 12( months ) = 26,280 + 60 for annual expenses gives her 420 dollars left after a year
The biggest possible area is one that is as close to a square as possible.
20 ÷ 4 = 5 feet
5 x 5 = 25 ft²
The biggest area is 25 ft² with its length and width at 5 feet.
Maybe it is $9.00
2 x 9 = 18
$2 per inch
18 divided by 2
$9.00?
