Luisa liked 7 miles of a 21 mile trail. What percent of the trail did she hike?
1 answer:
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Answer:
8r^4
Step-by-step explanation:
√(64r^8) = √((8r^4)^2) = 8r^4
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You can make use of either or both of these rules of exponents:
(a^b)^c = a^(b·c) . . . . . used above
Using the second rule, you can write the expression as ...