Answer:
x =55 degrees
y = 35 degrees
Step-by-step explanation:
We know that the distance from the center of the circle to the circumference is the radius
that means the triangle starting out from O is isosceles since two of the sides are radii and thus the angle of those sides are the same
Let us call one of the angles z
we know that the sum of the angles in a triangle is 180 degrees
That simply means;
80 + 2z = 180
2z = 180-80
2z = 100
z = 100/2
z = 50 degrees
So the angles at each upper end of the cyclic quadrilateral are;
x + 50 and y + 50
we know that the angles that face each other in a cyclic quadrilateral are supplementary
Thus;
95 + y+ 50 = 180
y= 180-95-50
y= 180-145
y = 35 degrees
Now, for x, the angle supplementary to the angle that faces x+ 50 equals x + 50
Thus;
x + 50 = 105
x= 105-50
x = 55 degrees
The answer would be B a≈9.22
Answer:
In the year 2000 the number of hazardous waste sites in state y was 21
Step-by-step explanation:
Let
x ----> the number of hazardous waste sites in state x in the year 2000
y ----> the number of hazardous waste sites in state y in the year 2000
we know that
----> equation A
----> equation B
Solve the system of equations by substitution
Substitute equation B in equation A
![34=2y-8](https://tex.z-dn.net/?f=34%3D2y-8)
Solve for y
Adds 8 both sides
![34+8=2y](https://tex.z-dn.net/?f=34%2B8%3D2y)
![42=2y](https://tex.z-dn.net/?f=42%3D2y)
Divide by 2 both sides
![y=21](https://tex.z-dn.net/?f=y%3D21)
therefore
In the year 2000 the number of hazardous waste sites in state y was 21
Answer:
n=5*-45
n=225
:)
Step-by-step explanation:
Answer:
no this number is not divisible by ten. when you divide something by ten you should get a whole number. But when dividing 457,014 by ten you get a decimal. This is the decimal 4,570,14.
Step-by-step explanation: