Mathematics: 5. a farm has cows and ducks. between them, these animals have 78 feetand 27 heads. how many of each animal are there? show how you know.

5. a farm has cows and ducks. between them, these - id51727381, silentlotusalex6284

Ответ:

jalenJohnson6t

03.06.2020

1 cow has 4 legs and 1 duck has 2 legs

c= the # of cows
d= the # of ducks

78 feet —> 4c+2d =78
27 feet —> c+d=27

4c+2d=78/:2
c+d=27/•(-1)

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Ответ:

mexprencss

02.09.2020

Mathematics

There are going to be 15 glass jars, hope this helps

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5. a farm has cows and ducks. between them, these animals have 78 feet
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