Answer:
18a +9
Step-by-step explanation:
9(2a+1)
The first step is to distribute the 9
9*2a+9*1
18a +9
Answer:
360 degrees
Step-by-step explanation:
A rotation symmetry angle is an angle with which a figure is rotated and still looks the same as if it wasn't turned.
For example, a square has a minimum angle of rotational symmetry of 90 degrees, because if you turn it by 90 degrees, it still looks exactly the same way.
This rotational symmetry is mostly used with regular shapes.
This quadrilateral is not a regular shape, and there's only one way to have it look exactly like it is now... and it's to do a full turn, of 360 degrees.
11 people. 160+3 = 163. 1800/163 = 11.0429. Since you can not have a part of a person you have to round down to 11
Answer:
B
Step-by-step explanation:
your welcome!
