Use the commutative and/or associative laws to rewrite the given expression. Label each step with a reason.(x + 7) + y as 7 + (x + y)
What will be an ideal response?
(x + 7) + y = (7 + x) + y Using the commutative law
= 7 + (x + y) Using the associative law
Mathematics
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Multiply. Change any mixed number to an improper fraction before multiplying.2
× 
A. 2
B. 
C. 4
D. 
Mathematics
Write the rate as a unit rate.138 miles in 3 hours
A. 46 miles B. 46 miles/hour C. 414 miles D. 141 miles/hour
Mathematics