Answer:
640x²-380x
Step-by-step explanation:
(4x]+4[(10x-6)(4x)]4x+(40x-24)(16x)
4x+640x²-384x
640x²-384x+4x
640x²-380x
He would have 21 before he bought the 10 stamp because 31-10=21
Step-by-step explanation:
Hey where you went give me your mail id
Answer:
- octagon
- irregular polygon
- concave
Step-by-step explanation:
The figure has 8 sides that are each line segments joined at the ends. An 8-sided polygon is called an <em>octagon</em>. Though the sides are the same length, not all angles are congruent, so the polygon is <em>not a regular polygon</em>. Some of the angles are reflex angles, so the polygon is <em>concave</em>, not convex.
Answer:
2.4
Step-by-step explanation:
