2x2+5x=12, 2x+5x=7x, 12+2=14, 7x/7=14/7, x=2
Answer:
it's part of the real number system
it's a rational number
it's an integer
Step-by-step explanation:
Notice the picture
the rhombus, or kite, is really just 4 triangles
all sides are the same lenght in a rhombus,
thus, find the area of all of the triangles,
and you already have two sides given,
and then, add them up
or just find the length of one, and multiply times 4 :)
recall, area of a triangle = 1/2 bh