Which equations illustrate the commutative property of multiplication?

choose exactly two answers that are correct.

a.
• 3.4 = 3.4 •

b.
–8 • (5 + 3.1) = (5 + 3.1) • (–8)

c.
–4 • (5 + 7.1) = –4 • 5 + (–4) • 7.1

d.
–8 • (4 • 1) = (–8 • 4) • 1

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?