Answer:
z = 110
Step-by-step explanation:
The measure of an angle created by the intersection of two secants outside a circle is half the difference of the angles it intercepts. In this it would be:
2x + 15 = 1/2 * (10x + 20 - 80)
We can now solve:
4x + 30 = 10x - 60
30 = 6x - 60
6x = 90
x = 15
This means the values of 10x + 20 is 10(15) + 20, which is 170.
Now, we can add up all the arcs in a circle, which sum to 360 degrees:
360 = z + 170 + 80
360 = z + 250
z = 110
Answer:
25
Extra Info:
Thank you for this !! But for anyone who seriosuy doesn’t know: If you do 5+5, five times, its the same as 5x5 !!
Another Example:
3x3=9
3+3+3=9
3+3=6 6+3=9
Answer:
144 square inches.
Step-by-step explanation:
4*12*3=144
Okay I don’t think I have to do it anymore I
