1) At the Gooddog Obedience School, dogs can learn to do three tricks: sit, stay, and roll over. Of the dogs at the school:

50 dogs can sit & 17 dogs can sit and stay |

29 dogs can stay & 12 dogs can stay and roll over |

34 dogs can roll over & 18 dogs can sit and roll over |

9 dogs can do all three & 9 dogs can do none.

How many dogs are in the school?

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2) Solve for z in the following equation: 2-iz = -1 + 3iz.

DragonXlayer Oct 2, 2020

edited by
DragonXlayer
Oct 2, 2020

edited by DragonXlayer Oct 2, 2020

edited by DragonXlayer Oct 2, 2020

edited by DragonXlayer Oct 2, 2020

edited by DragonXlayer Oct 2, 2020

#6**+1 **

1) At the Good dog Obedience School, dogs can learn to do three tricks: sit, stay, and roll over. Of the dogs at the school:

50 dogs can sit & 17 dogs can sit and stay |

29 dogs can stay & 12 dogs can stay and roll over |

34 dogs can roll over & 18 dogs can sit and roll over |

9 dogs can do all three & 9 dogs can do none.

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If I'm not mistaken (again :)) there are 84 dogs.

jugoslav Oct 2, 2020