niti1409
02.02.2021 •
Mathematics
A manager at a coffee shop is moving his own coffee blend. He is using beans from Zimbabwe (d, which have a 110% caffeine content, and beans from Costa Rica (c, which have a 1.35% caffeine content. If he wants to make an 11 pound blend that has a 1.16% caffeine content, which system of equations would allow him to determine how much of each type of bean to include in the blend?
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Ответ:
2x+18+5x-9
2x+5x18-9
7x+9
7. 7
x= 1.4
hope it helps