Which shows the use of the associative and commutative properties to make simplifying 3.2 + 20 – 3+ 4.8 + 19 easier? O A. [3.2 + (-3) +20] + (19+ 4.8) O B. (3.2 +20) + (-3+ 4.8 + 19) O C. (3.2 + 4.8) + [20 + 19+(-3)] O D. (19 +3.2 +20) + 4.8+(-3) SUBMIT

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step-by-step explanation:

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a reflection across the x axis and a 90 degree rotation left and right.

answer:

the answer is b) divide by -4 on each side and flip the sign.

step-by-step explanation:

we first need to start by dividing. this is because it is a multiplication problem to start.

we also need to make sure we flip the sign because any time you multiply or divide by negative numbers, the sign must be flipped.