Answer:
3 1/2cm
Step-by-step explanation:
Answer:
82
Step-by-step explanation:
180+148+xy=360
xy=32
arc=32=double the angle=16 degrees
Since both are radii they are equal. It is an isoceles triangle so angle x equals angle y.
180=16=164/2=82
Answer:
The equation of a circle is
.
Step-by-step explanation:
-The equation of a circle is:
(where center is
, the point
and the radius known as
).
-Use the center (5,-4) and the point (5,-2) for the equation:
![(5-5)^2+(-2+4)^2=r^2](https://tex.z-dn.net/?f=%285-5%29%5E2%2B%28-2%2B4%29%5E2%3Dr%5E2)
-Solve the equation:
![(5-5)^2+(-2+4)^2=r^2](https://tex.z-dn.net/?f=%285-5%29%5E2%2B%28-2%2B4%29%5E2%3Dr%5E2)
![0 + (-2)^2=r^2](https://tex.z-dn.net/?f=0%20%2B%20%28-2%29%5E2%3Dr%5E2)
![4 = r^2](https://tex.z-dn.net/?f=4%20%3D%20r%5E2)
![\sqrt{4} = \sqrt{r^2}](https://tex.z-dn.net/?f=%5Csqrt%7B4%7D%20%3D%20%5Csqrt%7Br%5E2%7D)
![2 = r](https://tex.z-dn.net/?f=2%20%3D%20r)
-After you found the radius, use the center (5, -4) and radius 2 to get the equation of a circle:
![(x-5)^2+(y+4)^2=2^2](https://tex.z-dn.net/?f=%28x-5%29%5E2%2B%28y%2B4%29%5E2%3D2%5E2)
-Then, after you have the equation, the radius needs to simplified by the exponent:
![(x-5)^2+(y+4)^2=4](https://tex.z-dn.net/?f=%28x-5%29%5E2%2B%28y%2B4%29%5E2%3D4)
So x is a variable which is just <span>character representing a number. We want to find x. To do this we want to get X by itself on one side of the equation. In this case/ we just need to divide both side by -4. Whatever you do to one side, you must do to the other. This gives us X = -12. To check yourself just plug your answer back into the equation to see if its right. -4(-12) = 48. You have successfully solved for X.</span>
Answer:
AB = 3√5
Explanation: You can use
a^2 + b^2 = c^2 formula.
6^2 + b^2 = 9^2.
36 + b^2 = 81.
81 - 36 = 45
√45 = 3√5