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ser-zykov [4K]
3 years ago
11

A machine stamps 360 metal parts in 15 minutes. Find the unit rate in parts per hour

Mathematics
2 answers:
Leviafan [203]3 years ago
5 0
Just divide the number of parts made by the number of hours to get parts per hour.  15 minutes is 1/4 of an hour, so we divide 360 by 0.25 hours:

(\frac{360\ parts}{0.25\ hours}) = 1440\ parts\ per\ hour
butalik [34]3 years ago
3 0
15 minutes is 1/4 of an hour which is .25 hours
so all you got to do is divided the total number of metal parts divided .25 hours
360/.25=1440 metal parts in one hour
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Use a scale factor of 2

Step-by-step explanation:

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The length of side B''C'' in polygon A''B''C''D'' = √((4 -3.5)² + (2 - 4)²) = (√17)/2

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The length of side CD in polygon ABCD = √((6 -0)² + (-2 - (-2))²) = 6

The length of side C''D'' in polygon A''B''C''D'' = √((4 -1)² + (2 - 2)²) = 3

For the side DA  and D''A'', we have;

The length of side DA in polygon ABCD = √((1 -0)² + (-6 - (-2))²) = √17

The length of side D''A'' in polygon A''B''C''D'' = √((1.5 -1)² + (4 - 2)²) = (√17)/2

Therefore the Polygon A B C D can be obtained from polygon A''B''C''D'' by multiplying each side of polygon A''B''C''D'' by 2

The correct option is therefore;

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