Mathematics

Mathematics

Problem

Use the sign rules chart below. Determine if each product/quotient is positive or negative, then solve: Same Signs: (+)(+)(+)(+) or (−)(−)(-)(-) = POSITIVE Different Signs: (+)(−)(+)(-) or (−)(+)(-)(+) = NEGATIVE
Expression+ or -?Answer
−13×5-13 \times 5
−24⋅(−2)-24 \cdot (-2)
72÷(−3)72 \div (-3)
−45÷(−9)-45 \div (-9)

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