Since the angles in triangle ACM indicate that it is a 30-60-90 triangle, we know that the other two sides of triangle ACM are 20 and 10 (30-60-90 triangles have a very specific side coefficient). This means that the sides of this triangle have side lengths 40, 10, and

. Adding these together you get 50+

. Hope this helps!
In 9 different ways.
There will be 3 people left and 3 horses, and just multiply 3•3.
Okay the answer is 69 because 81-2 is 69
2.5 4/5 8% that is an example of written fractions decimal and percents