Answer:
Step-by-step explanation:
a. 7*7*7= 7 cubed(when we divide powers we subtract them)
None. The triangle inequality states that the sum of the smaller two sides of a triangle must be greater than the third side. As 4+5=9, this inequality is false in this case, so these sides cannot create a triangle.
<span>associative property of addition
answer is
</span><span>(u + 7) + 13 = u + (7 + 13)</span>
