Which mathematical property is demonstrated?

7 + 9 + 3 = 7 + 3 + 9

associative property of addition

commutative property of addition

associative property of multiplication

commutative property of multiplication

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

What is the measure of angle x? a.101 b.158 c.44 d.79