Merits and demerits of matrix algebra​

does not really help you identify the real or complex numbers which are solutions of the quintic equation. Note that matrix arithmetic is associative but not generally commutative. As a result it is expressive enough to provide natural representations of quaternions, but not octonions. Matrices are linear

the answer is n

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.