Question

2. William said that when you multiply three positive and negative decimals, the answer changes depending on where you place the parentheses.
Use these numbers to answer the questions:
–2.4, –0.63, 1.8, –3.42

(a) Is William’s statement always true, sometimes true, or always false? Write two pairs of equations to support your answer.
(b) Write a rule describing the results when one multiplies three positive and negative decimals and changes the order of multiplication using parentheses.

Answer 1

Yes it does due to the rules of PEMDAS. You have to do what is in the parentheses first so if you change whats in them, your going to get a different product <span />

Answer 2

(-2.4 * -.63)(1.8 * -3.42) =-9.307872

BUT...

(-2.4*-.63 * 1.8) * (-3.42)= -9307872

SO ITS THE SAME NO MATTER WHAT SORRY I WAS MISTAKEN. It doesent matter a flying horse where the parenthesis are