Should be C. 1/19. because if there's 20 maebles in the bag and without replacing the marble then it actually would be 2/18
x=7x-21
Step-by-step explanation:
- x=7x-21
- 21=7x-x
- 21=6x
- x=21/6
- x=7/2
- x=3.5
Xy=30
x=6/11
6/11y=30
Divide by 6/11 on both sides
y=55
3 to the 2nd power would be 9… so to make it a -9 or 1/9 it would be 3 to the -2nd power
Answer: 172.8°
Step-by-step explanation:
For a regular polynomial of N sides, the sum of all interior angles must be equal to:
Sum = (N - 2)*180°.
In this case we have N = 50
Then:
Sum = (50 - 2)*180° = 48*180°
Now, if all the 50 interior angles have the same measure, then the measure of each one will be equal to the quotient between the sum and the number of sides, this is:
Sum/50 = (48/50)*180° = 172.8°
Then the interior angles of a regular polygon of 50 sides is 172.8°
