center(8,4):
<span>The center of a circle is a point from which all points on a circle are the same distance.
radius7:
</span><span>The radius of a circle is the length of a line segment from its </span>center<span> to its </span>perimeter.
<span>The radius is typically denoted as "r" or "R".
diameter14:
</span><span>The diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.
</span>Circumference or (or Permieter):
= 2*π*R = 2*3.14*7 = 43.9822971502571
<span>The circumference of a circle is the distance around it.
</span>Area:153.9380400259
<span>Area of a Circle is the amount of space occupied by the circle.The area of a circle is p times the radius squared, which is written: A = </span>π*R2<span>.
</span>The standard form for the equation oif a circle is
(x-a)2+(y-b)2=r2
And in our particular case:
(x-8)2+(y-4)2=72
(x-8)2+(y-4)2<span>=49
</span>
The general form for the equation of a circle is
x2<span> + y</span>2<span> + Ax + By + c = 0</span>
We can get the general form by expanding the equation of the standard form
(x-a)2+(y-b)2=r2
(x-8)2+(y-4)2=72
(x-8)2+(y-4)2=49
x2-16x+64+y2-8y+16=49
x2+y2<span>-16x-8y+31=0</span>
Answer: D
Step-by-step explanation: |-9| = 9 and |8| = 8 so 9 is greater than 8
Answer: The width is 10.2 inches, the perimeter is 71.4, the area is 260.1.
Step-by-step explanation: So first i divided 25.5/5 which equals 5.1. The ratio is 2:5 so I know that i have to multiply 5.1x2 which is 10.2, thats how you get the width. The perimeter I just did 25.5+25.5+10.2+10.2 =71.4. For the area I just multiplied 25.5x10.2=260.1.
Answer:
0.833
Step-by-step explanation:
Answer:
$11
Step-by-step explanation:
Set up the system of equations
18x + 9y = 45
20x + 12y = 52
Let's try to get y on one side for the first equation.
9y=45-18x
y=5-2x
Now substitute it into the second equation.
20x + 12(5-2x) = 52
20x + 60 - 24x = 52
-4x = -8
x = 2
Now solve for y using the first equation.
18(2) + 9y = 45
36 + 9y = 45
9y = 9
y = 1
Now that we know x and y we can solve for the price of 4 hot dogs and 3 drinks.
4(2) + 3(1) = z
8 + 3 = z
11 = z
That means that the price is 11 dollars.
