3 years ago

Help meh pls!! plsss

Mathematics

2 answers:

Aleks04 [339]3 years ago

8 0

12.128 divided by 0.032 is 379 (C)

xxMikexx [17]3 years ago

6 0

The answer is C.379---------

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4 years ago

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snow_lady [41]

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Step-by-step explanation:

Explanation:-

Given function y = 3/x -2 ...(i)

The average velocity of the function over the given interval

Average velocity = $\frac{1}{b-a} \int\limits^b_a {(\frac{3}{x} -2)} \, dx$

= $\frac{1}{7-4} \int\limits^7_4 {(\frac{3}{x} -2)} \, dx$

now integrating

= $\frac{1}{3}( \int\limits^7_4 {(\frac{3}{x} )} \, dx-2\int\limits^7_4 {1} \, dx )$

= $\frac{1}{3} (3 (log x) - 2 x )_{4} ^{7}$

= $\frac{1}{3}( (3 (log 7) - 14 )-(3 log 4 -8))$

by using formulas

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on simplification , we get

= $\frac{1}{3}( (3 (log 7) -3 log 4 ) - \frac{1}{3} (6)$

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Average velocity of the function over the given interval

= $log(\frac{7}{4} ) -2$

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3 years ago