Which property do these belong to; the commutative property, the distributive property, and the associative property?
a - 3x25=(3 x 30)+(3 x 5)= 75
b- 15 x (2 x 4) = (15 x 2) x 4 = 120
c - 30 + 5.2 + 7 = 7+5.2 + 3- = 42.2
d- 5 x 13 = (5 x 10) + (5 x 3) = 65

Which of the choices shown could be used to prove that aacp=abcp ?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0