Answer the question.There is an identity property for both addition and multiplication. Is there an identity property for subtraction? If so, state the property.
A. Yes. x - 0 = x
B. No.
Answer: A
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Determine which of the expressions is not equivalent to the given expression by the commutative and associative laws.x + (y + 13)
A. (x + y) + 13 B. x + (13 + y) C. 13x + y D. (y + x) + 13
Simplify.[47 + (-7)] ÷ (-5)
A. 
B. 35
C. -8
D. 8
Solve the problem. Round to two decimal places if needed.Find the area of the sector of a circle of radius 10 centimeters formed by a central angle of 75°.
A. 65.45 square centimeters B. 130.9 square centimeters C. 6.54 square centimeters D. 20.83 square centimeters
Solve the problem.A drippy faucet wastes 64 oz of water a day. If there are 45 million such drippy faucets, how much water, in gallons, is wasted in a day?
A. 2880 gal/day B. 90,000,000 gal/day C. 22,500,000 gal/day D. 45,000,000 gal/day