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ALGEBRA I - SECTION 1-6 (Multiplying and Dividing Real Numbers)
@ SECTION 1-6 : MULTIPLYING and DIVIDING REAL NUMBERS
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MULTIPLICATION and DIVISION RULES
-If there is an even number of negative signs, the sign of the answer is positive. -If there is an odd number of negative signs, the sign of the answer is negative.
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Find each product. 5) (8.5x)(4.2y) ANSWER : 35.7xy 2) 3.6(-6)
1) (7)(-4)(-1) ANSWER : 28 ANSWER : 35.7xy 2) 3.6(-6) ANSWER : -21.6 ANSWER : -2/5 ANSWER : (-1/5)wy 3) ANSWER : -2/3 ANSWER : 76/15
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Find each quotient. 8) 20 ÷ (-5) 12) -240 ÷ 12 9) -144 ÷ (-9)
8) 20 ÷ (-5) ANSWER : -4 12) ÷ 12 ANSWER : -20 9) ÷ (-9) ANSWER : 16 13) 8 ÷ -2.5 ANSWER : -7 ANSWER : -3.2 ANSWER : 10
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14) ÷ (-0.3) ANSWER : 31 ANSWER : 30 ANSWER : 34/7 ANSWER : -7/55
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What is the simplest form of each expression?
ANSWER : ± 2/3 ANSWER : -7 The elevation of a hot air balloon changes by -3750 feet in 5 minutes after opening the parachutes. What is the change in the hot air balloon’s elevation each minute? ANSWER : feet/minute
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