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dominicanaaa
21.07.2019 •
Mathematics
Mrs. barkley is teaching a class in which the students are decorating gift boxes. she wants the students to decorate gift boxes using a ratio of 4 gems for every 3 ribbon flowers. dan used 20 gems for every 15 ribbon flowers. mary used 22 gems for every 18 ribbon flowers. nancy used 18 gems for every 24 ribbon flowers. jason used 26 gems for every 20 ribbon flowers.
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Ответ:
Dan:
4 20
3 = 15 You can use cross products to check to see if they are equivalent.
3 x 20 = 4 x 15
60 = 60
Mary:
4 22
3 = 18
4 x 18 = 3 x 22
72 is not equal to 66
Nancy:
4 18
3 = 24
4 x 24 = 3 x 18
96 is not equal to 54
Jason:
4 26
3 = 20
4 x 20 = 3 x 26
80 is not equal to 78
Ответ: