Answer:
Ext=2x
Int=7x
Int+ext=180
2x+7x=180
9x=180
x=20
Ext=2×20=40
No of sides =360/40
=9 sides.
I hope this helped you
Step-by-step explanation:
Answer:
40 cm
Step-by-step explanation:
This is because the angle opposite the x is equal to the angle opposite the 40 cm making the sides equal as well.
Irrational numbers are numbers that can not be written as a simple fraction. An example of one would be 
. Pi is about 3.14, but it goes on forever. You can not write pi as a simple fraction.
Step-by-step explanation:
The number n is - 5
Because the sum = 8 + (-5) = 3
After multiply by - 4 = 3 x - 4 = - 12
Option A is the correct answer
Step-by-step explanation:
It's must be -3 ...............
