Which expression is equivalent to 7^3 ⋅ 7^−5? A.7^2 B.7^7 C.1 over 7 to the 2nd power D.1 over 7 to the 7th power

Mathematics

1 answer:

stepladder [879]4 years ago

4 0

$7^3\cdot7^{-5}=7^{-2}=\dfrac{1}{7^2}$

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The factory used to produce 126 articles a day. As a result of retooling, production increased to 189 articles a day. What was t

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Answer: The answer is 50%.

Step-by-step explanation: Given that the factory produces 126 articles in a day. After retooling, the production of the articles increased and they started producing 189 articles in a day. We need to calculate the percent increase in labour productivity.

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Percent Increase in labour productivity will be equal to the percent increase in the number of articles.

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Therefore, percent increase in the number of articles is given by

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