lindjyzeph
30.10.2020 •
Mathematics
A disc jockey has to choose three songs for the last few minutes of his evening showIf
there are nine songs that he feels are appropriate for that time slot, then how many
ways can he choose and arrange to play three of those nine songs?
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Ответ:
9 small boxes and 15 large boxes
Step-by-step explanation:
x = small box
y = large box
x + y = 24
9x + 24y = 441
-9x - 9y = -216
15y = 225
y = 15
x + 15 = 24
x = 9