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Roman55 [17]
2 years ago
9

Bob can draw 14 shapes in 7 minutes.how long does it take bob to draw 28 shapes at the same rate

Mathematics
2 answers:
grin007 [14]2 years ago
8 0
14 shapes in 7 minutes can be multiplied by 2 to get 28 shapes in 14 minutes.  14 x 2 is 28 and 7 x 2 is 14.  Your answer is 14 minutes.  Bob draws at a rate of 2 shapes per minute.  
miss Akunina [59]2 years ago
5 0
It will take 14 minutes.
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The joggers run 8 mile north and then runs 5 miles west. we have to calculate the shortest distance they have to travel to return to their starting point.

The distance traveled north and west respectively makes the height and base of a right angled triangle.

to find the shortest distance to the starting point, the hypotenuse has to be determined.

height h=8 miles

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using pythagoras theorem

b^2+h^2=H^2\\5^2+8^2=H^2\\25+64=H^2\\89=H^2\\\\H=\sqrt{89} =9.433=9.4 miles

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However, in the scenario described above, the sample chose. Are friend's of the student, this makes the data lack randomness as those who aren't friends to the student do not stand a chance of being selected. The sampling procedure employed is called convenience sampling.

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