X+Y+Z=2+(-3)+(-4)=-5
That's your answer, lovely~
Answer:
73.4846922835 = 73.5 and no it is not a perfect square 5400/100 = 54
First symmetrically cut the octagon to get 8 pieces. (So that you will get the idea that this polygon is divided into 8 triangles)
Then find the area of one of the triangles:
Area of Triangle = 
A =
× 12 × 19
A = 114 cm²
To find the area of the whole octagon shape:
A = 114 × 8 = 912 cm²
<em>Hope it helps!</em>
In this equation y would equal 4 or it could be 1
Answer:
A 24 because half of 12 is 6 then 6 x 4 is 24
B 90÷3 is 30 which is 2/3 of 45
Hope this helps you